Thanks to the communtiy I'm haveing alot of luck installing .esp improvement mods. My game looks really nice now. Thanks for that! Graphically I am still very disappointed with the pixilated look of rocks, boulders and mountains. Both of these mods are of interest to me:
http://skyrim.nexusmods.com/mods/27999
http://skyrim.nexusmods.com/mods/31617
They seem to require replaceing texture files and other complicated install features. Any suggestions?

Well, by their nature rock and boulder texture mods have to use textures... .esp files don't contain textures, so no. You won't find an .esp file that replaces the textures.
That said, what's complicated about installing those mods? Do you use NMM?