I have something that extracts meshes ok but it doesn't seem to be able to extract textures from the BSA. What should I use?

http://skyrim.nexusmods.com/mods/1395

Seems to do the trick for me. Good luck!

Used it to extract my own textures from one computer to another (my desktop had some temp issues and one of my mods needed a patch), so this will work for extracting your own or Bethesda's textures