For installing mods easier, I do following, it is very effective:
Download your mod. Unpack it to a temp folder. Read the readme, review the mod, select the right ESPs, order the preferred textures/meshes, delete unnecessary files and repack the mod with this order:
textures/meshes/somemod.espreadme.txt
inside a new package.
Copy the newly created package into Installers folder of Wrye MASH.
Install it with Wrye MASH. (right-click install, very easy.)
Run MLOX.(Again very easy, you run and press one button, sorts your plugin load order, even offer updates for your mods with LINKS)
Check for evil GMSTs in escog.(fully automatic)
Care free gaming.
MLOX
http://code.google.com/p/mlox/wiki/Mlox
WRYE MASH
http://www.tesnexus.com/downloads/file.php?id=27588
WRYE MASH GUIDE
http://wryemusings.com/Wrye%20Mash.html
ESCOG
http://code.google.com/p/escog/