ok...so first of all to the guy with the LoadBitmapFile prob, i get the same prob no matter where i make the bmp. second.. i read some document from nvidiot''s site (nvidia.com) about s3tc, now, to convert a bmp to an s3tc image all i do is load the uncompressed bmp with auxDIBImageLoad and pass it to some func that makes it s3tc format, but, my question is,how can i later save\load the s3tc data using a binary method (not simple text)? so other ppl won''t be able to change it... basically, what im a sking is reading/writing binary files mini-base-tutorial.. PLEASE HELP IF U CAN!! **> ATi Rules! nvidia doesn''''t...that simple! <**