i would like to know some mods to improve the graphics ,better combat and some nice assassin armor and weapons
Combat: i would like to improve it specially the archery!
Graphics:some mods that put better graphics would sure to like it alot!
Armors:just some cool weapons and armor for fun!

Quarls is great for textures. Here is a good page:

For kool armors and weapons, quests, and gameplay improvements I recommend OOO. All can be found here:


http://devnull.sweetdanger.net/

I also recommend Matigen's Moster Mod, which is very compatible with OOO.

If you do all that you will have an amazing game, in my opinion.

WHERE CAN i DOWNLOAD MODS FOR OBLIVION?

tesnexus, it great you should go there, lots of good stuff

I you want bows look at this compilation. I have used most of Nicoroshi's bows and I love them all. My current character is using The Bow of Daedric Blood and Jade. My two companions are using the Quinga Bows. I found all of the bows as separate downloads but this compilation is nice. It contains armor and other weapons too.

http://oblivion.nexusmods.com/mods/13519

http://tesalliance.org/forums/index.php?/files/file/514-duke-patricks-combat-archery/ seems to be the winner for archery.

I like http://oblivion.nexusmods.com/mods/13884 for just adding lots of variety to the available armors and weapons. If you just want custom items for your character, you could spend days browsing the Nexus for mods.

Graphics improvements: what are you looking to improve specifically? There's mods for literally every graphic and texture in the game. The only one I consider must have is http://oblivion.nexusmods.com/mods/18305 for the weather. Everything else is down to taste.

So no more MODs thats it, Ok then

There are only three mods that are absolutely essential: http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=1417 the http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=2754 (if one is using Shivering Isles) and the http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=2384 (if one is using an official mod).

I choose the rest of my mods on a character-by-character basis. Each game has a different mod list, depending on my character's needs. But these are the mods I use with every character:

http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=3953 by Oscuro, dev_akm, MadCat221.
Not just a 'creature-adding' mod, not just a 'difficulty' mod, not just a 'gameplay-tweaking' mod, Oscuro's Oblivion Overhaul is actually one of the finest finest roleplaying mods around. http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=1757 by Martigen, Corepc Dev_Akm Shadowborn is the perfect complement to Oscuro, adding much-needed spontaneity to Oscuro's static world. Crank Martigen's mod all the way up and Oblivion will feel as wonderfully unpredictable as an MMO. These mods are so inseparable to me I count them as one.

http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=2764 by, of course, DarN.
This essential mod goes a long way toward making Oblivion's consolized interface useable. Configurable from within the game via a menu. I modify it with one of Luchaire's re-colorings, either http://www.tesnexus.com/downloads/file.php?id=16387 or http://www.tesnexus.com/downloads/file.php?id=16897 I also use http://www.tesnexus.com/downloads/file.php?id=14822 by WillieSea and http://www.tesnexus.com/downloads/file.php?id=19063 by Badmagic to enliven the map with color and to replace what I consider to be ugly map markers with more aesthetically pleasing X's.

http://www.tesnexus.com/downloads/file.php?id=14065 by tejon, or http://www.tesnexus.com/downloads/file.php?id=13879 bu ABO.
Two excellent character-levelling mods that do away with stat management, allowing the player to concentrate on roleplaying. Realistic Leveling tends to be the better mod for the more jack-of-all-trades characters or for characters that change during the course of a game. nGCD tends to be the better mod for characters that fit conventional Dungeon-and-Dragons archetypes and never deviate from that during the course of a game.

http://www.tesnexus.com/downloads/file.php?id=14304 by tejon.
This mod allows the player to control the speed of advancement of each skill. Easily configurable via an .ini.

http://www.tesnexus.com/downloads/file.php?id=11237 by tejon. Willpower again has an affect on the player's vulnerability to magic, as in previous ES games.

http://www.tesnexus.com/downloads/file.php?id=7484 by Deathless Aphrodite.
Makes the player lose fatigue when running. When the player's fatigue hits 0 he starts to walk. Also allows the player to sprint for a brief time.

http://www.tesnexus.com/downloads/file.php?id=25078 by TheNiceOne.
Using this mod merchants' gold goes up and down with each trade. Also does away with the haggle slider (what a relief!) Allows the player to specify how much gold they recive from looting containers, enemies, as quest rewards, etc. All configurable via .ini.

http://www.tesnexus.com/downloads/file.php?id=12149 by tejon. Attempts to expand on Bethesda's concept of Birthsigns and make them for interesting and fun, at all levels.

http://tesnexus.com/downloads/file.php?id=35300 by ZenshinZenrei. Introduces three special advantages to each of the predefined Oblivion classes in order to make them more unique. Advantages are similar to special class traits from Arena and Daggerfall. Custom classes pick three Advantages manually.

http://www.tesnexus.com/downloads/file.php?id=2037 by Quarn and Dejunai.
Removes flowers from plants after you have picked them. This is a great little visual aid when picking many plants very close together.

http://www.tesnexus.com/downloads/file.php?id=1840 by Woodman, http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=21 by Tandem, http://www.tesnexus.com/downloads/file.php?id=5138 by Soor, http://www.tesnexus.com/downloads/file.php?id=5919 by b3w4r3, http://planetelderscrolls.gamespy.com/View.php?view=OblivionMods.Detail&id=129 by Talonhoff and http://morrowind4kids.com/pseronwyrd/PWRunSpeed.zip by Pseron Wyrd are a collection of small tweak mods that I cannot bear to play without. Chase Camera Mod is essential to me because I play exclusively in third person and will quickly become nauseous without it; Bethesda went to great lengths to create the illusion of a seamless worl when they made Oblivion and then went and ruined it by spamming messages onto the player's screen everytime they enter a new cell, and No Load gets rid of that; Initial Glow gets rid of what I consider to be a very ugly 'plastic wrap' enchantment effect; Sleep Rest Wait Any Time, because no game has any business telling me when I can sleep, or where; No Psychic Guards tones down guards' clairvoyance a little bit; Run Speed Tweak slows down the base running/walking speed of the game to Morrowind's running/walking speeds.

http://www.tesnexus.com/downloads/file.php?id=16005 by mmmpld'
A fun little 'immersion' mod that allows the player to see their character use the same getting-into and getting-out-of bed animations used by NPCs.

http://www.tesnexus.com/downloads/file.php?id=11449 by RamyEnfant.
Adds a collection of new jump animations. The characters execute a cool Night-Elf-style forward roll with weapons sheathed and a variety of other jumps with different weapons drawn. I often jump just to watch these animations. I'm easily pleased.

http://www.tesnexus.com/downloads/file.php?id=4387 by CorePC.
Adds much-needed life to Cyrodiil's roads. The merchants are great if you like to spend extended time away from cities as I do. To this I add http://www.tesnexus.com/downloads/file.php?id=20575 by LazyAltmer. These two mods do a lot to make Cyrodiil a lot less lonely when travelling the roads. They also help fight, too, which has saved my character's life more than once when playing all these overhaul mods.

http://www.tesnexus.com/downloads/file.php?id=16513 by Bananasplit, Wolfslady, Reckless, SilentResident, Nernie, Vorians and Ismelda.
The way the cities of Tamriel should have looked. Spend hours wandering around like a tourist, awestruck at how different (and gorgeous) everything looks. Comes in modular form - you can choose to redo all of Cyrodiil's cities or just one. It's your choice. When I'm not using Better Cities I use Arthmoor's http://www.gamesas.com/bgsforums/index.php?showtopic=1019807, which tranfers the vanilla cities into the Cyrodiil worldspace, ala Morrowind. Wonderful for those of us who love to ride horses through town. I've taken the high walls down in my copy of this mod, making the towns feel even more like towns in Morrowind.

http://www.tesnexus.com/downloads/file.php?id=2536 by Max Tael.
This is one of the plugins in Max Tael's Natural Environments suite of mods. It adds several non-hostile flying animals such as birds and butterflies.

http://morrowind4kids.com/pseronwyrd/PW_MorrowindFog.zip by Pseron Wyrd.
Oblivion's near-infinite view distance is ugly, in my opinion, and it also makes Cyrodiil feel much smaller than it ought to. This is my attempt to simulate Morrowind's fog. Combined with Run Speed Tweak, Cyrodiil feels as large and wonderfully mysterious as Vvardenfell once did.

http://www.gamesas.com/bgsforums/index.php?showtopic=942911 by Arthmoor.
Adds Morrowind-style transport to the game. A nicely immersive touch.

http://www.gamesas.com/bgsforums/index.php?showtopic=984109 by XMarksTheSpot, Brumbek & Ismelda.
Another mod I can't play without anymore. It adds windows that turn off and on in synch with day/night cycles and also, optionally, smoke from chimneys. Comes with a nice variety of window color tints too.

http://www.tesnexus.com/downloads/file.php?id=28977 by Emma.
An Alchemist-oriented companion with a mind of her own (and, as a bonus, dialog voiced by Emma herself).

http://oblivion.brashendeavors.net/bows/ by Brash.
A wonderful mod for anyone who loves light, ranger-ish amror and slightly more natural, non-fantasy-type bows. I also love the ranger camp just outside Weye (conflicts with Weye TICS, but not AFK Weye).

http://www.tesnexus.com/downloads/file.php?id=22828 by afk_dwip - or - http://www.tesnexus.com/downloads/file.php?id=9514 by TamaraVico.
I tend to alternate these two mods, as I love them both. I adore Tamara's Weye mod, but it does come with a framerate hit. I just love her cramped medieval-looking alleys and its attention to detail. It is quite possibly my favorite town expansion mod for either Morrowind or Oblivion. The area occupied by dwip's mod is smaller and, thus, conflicts with fewer mods and also does not hurt framerates quite as much (in my experience). It comes with some interesting quests though and is also nicely-laid out.

http://www.tesnexus.com/downloads/file.php?id=35908 by Shezrie. A compilation of five of Shezrie's superb villages, all in the Tamriel worldspace. Lakeland Village (south of Imperial City), Ravenwood Village (north of Chorrol), Woodland Village straddling the road between Imperial City and Skingrad (my favorite up to now), Haven Bay (in Valenwood) and the centerpiece of the mod, a complete makeover and expansion of Pell's Gate. Shezrie has been an excellent house modder since the days of Morrowind and her villages for Oblivion are Bethesda-quality in my opinion.

http://www.tesnexus.com/downloads/file.php?id=22401 by The Tamriel Rebuilt Team.
Stirk is a small but highly detailed island in the Abecean Sea west of Anvil. Those who are familiar with Tamriel Rebuilt's work for Morrowind will know that this is high-quality modding with an eye towards accuracy in matters of lore.

Oh god this. Epic mods right here, you should try them all out, especially the Morrowind style travel. I loved to travel in those giant ticks
For more mods just go to TESNEXUS

In addition to Stirk, there are a lot of great quest mods out there. Just search the nexus database.