Quake3World

ppl, pls help me!

im tryin to add alpha-channels to old (pre-existin) textures...
how does that work?
I could add one, but i could safe the pic as TIF/PSD only (32bit).
Saved as TGA it aint workin in Quake3 ...the texture is not displayed in-game.

In photoshop, I just make a copy of the Blue color channel and rename it to alpha then edit as needed.

I haven't done it in a while but I think you need to save the image as a 32 bit TGA (Red, Green, Blue, Alpha take up 8 bits each)

What's displayed in place of the texture in the game?