Editing And Making New Gfx - Quake

[Octavious]

well, I have some .bmp's of my old Half Life project, but for the life of me I can't remember how to make quake textures that work
I open the pak file up in wally and I cant execute the .lmp files that I think are the textures

so, How do you open them, edit them, make new ones, and have it allwork?
Ive done it before, I know Its possable..

I just forgot how lol

~Octavious