mm21h

I'm trying to create my own custom map. Now, in a tutorial I've found, it says to assign an .rsb material to the patch grid. I can assign colors or default 3ds textures and maps, but I can't seem to access the file browser to get the .rsb files from my GR dir. Keep in mind that I'm doing this through "Rendering->Material Editor". Am I doing something wrong? Here is the tutorial I'm referring to: http://www.ghostrecon.net/html/map-guide.htm HELP! mm21h