I believe you cant, once you start Combat Arms it automatically generates another textures.rez. I used to delete it to reduce lag years ago but its basically patched now.
Just delete it, if it works then it works. If it doesn't then oh well.
I cant teamview but im trying to run it as a shell (like a texture.rez file and it still has the files inside but then all the files inside of texture.rez are blank)
i dont think so
there is no longer a way to do this that i know of except to replace every dtx with a blank 1x1 pixel dtx image