how do i edit a MTL (see pictures for details)

[wanksta]

ok im working on a cool map based off the bloodgulch bsp. i have the obj all patched up and stuff and its looking good unfortuneately i have a problem. the .mtl i imported dosent show up in the material editor. and i need too edit the materials for the bsp. can someone help me.
pictures explain better than my ranting so plz look at them.

http://www.freewebs.com/infernosk8terstuff/problem2.png

basically i need to edit that mtl file. and i dont know how. plz help me

Edit: nvm i figured it out. i clicked on the material drop down in th material editor and clicked pick from object and it pulled the texture out of the bsp and put it in the material editor. YAY