The skinmapper.zip file you have requested: Tools and Utilities / Tools / Skin Mapper - 254.33kb is not available. Perhaps try browsing all files for the game Quake III Arena and upload any files you want to share or are missing. This is the only information we could locate:
Helps map out textures for models. Helps you make sure that the face texture is around the head, and the body texture is around the body, etc.