Good day.
I've been searching for over an hour on these forums for a way to delete spells from the spell book. I've already tried using OBSE, and it doesn't seem to effect my game in any way.
Could anyone give me a small detailed explanation on how to delete spells ?
Current Oblivion version is: 1.2.0416 with Shivering Isle installed.
Thank you in advance.

You'll have to use a mod, like http://tesnexus.com/downloads/file.php?id=23069

It's impossible on consoles. There's a mod dedicated to it on PC, though.

I am playing the PC version of the game.
I have downloaded the sable version of OBSE v0018, i have placed obse_loader and the two .dll files in my Oblivion folder. I have placed the files from Spell_Delete_And_Item_Remove_3_1-23069 into my Oblivion\Data folder and i also checked them in the Oblivion Launcher\Data Files - nothing happens when i try to delete a spell. I've also tried to open the game using obse_loader, it works... but nothing happens when i try to delete a spell.
I'm at a loss for words...
I've also tried to open my save game files in note pad to find out the correct spell ID for my custom spells so i can delete them from the console and it doesn't open properly, it's all giberish.
I am using Windows 7 Ultimate if that is relevant.
Help ?

That's likely due to the UAC. http://cs.elderscrolls.com/constwiki/index.php/Windows_Vista

I always keep UAC disabled, it's not that...

Uninstalling Oblivion is the only way to remove a spell from your spellbook. Then you must make sure you never install Oblivon again. Because. it's just too damn awful. Oblivion, Ye know?

ha ha ha ...

but there surely is a complicated mode to do it.... a mod in TESNEexus, for sure.

If you're on a PC, you can remove spells with the console command

player.removespell 

You can find the spell IDs http://www.uesp.net/wiki/Oblivion:Spells, along with instructions at the bottom of the page.

I'm glad to see it's not just me. I followed that link and tried it too. Same result. I even tried the 3.1 and then the 3.2 version; no joy.

yes, this will help - just that the player must pay attention that he will not be able to delete custom spells.

Is there a way to do the same on the 360 version?

Unfortunately, no. Only on PC.