open up files/segments/scifi/rooms.click on the file that says .fps and unless you have an editor change the filename to .txt (for example:control room full.fps, change it to:control room full.txt)
click on it and find where it says:
texture0 = texturebank\scifi\floors\metal\f_c_01_d2.tga
textured0 = texturebank\scifi\floors\metal\f_c_01_D2.tga
texturen0 = texturebank\scifi\floors\metal\f_c_01_D2.tga
textures0 = texturebank\scifi\floors\metal\f_c_01_D2.tga
and change the: scifi/floors/metal/f_c_01_D2.tga part,
texture1 = texturebank\scifi\walls\metal\w_e_all_01_d2.tga
textured1 = texturebank\scifi\walls\metal\w_e_all_01_D2.tga
texturen1 = texturebank\scifi\walls\metal\w_e_all_01_D2.tga
textures1 = texturebank\scifi\walls\metal\w_e_all_01_D2.tga
do the same with your walls.
bmr1923
aaron heithus