You might also look at .png - I know I am (for a couple of weeks now) - I don't know that it works with obj files but it should. It offers fair compression LZ77/huffman (with no royalty issues providing the copressor/decompressor follows the "deflate"(lz77 compression scheme)* specification). but if disk space isn't a problem use bmp. UVmapping? SAMS3D has a tutorial on it at their site which should answer your questions... or most of them. - TJ *deflate compression scheme (c)1996 L. Peter Deutch