Just a personal opinion, but I wouldn't consider PSD files to be a common enough format to include in a commercial product, especially on the PC. It's sort of like including Corel CPT files with objects, which is something that someone who doesn't use Photopaint wouldn't understand very easily. I'd suggest keeping to standard formats such as TIF, JPG, TGA, and BMP, and including separate maps for texture, transparency, bump and reflection. You may wind up with larger downloads, but you will be making it easier on your customer. -SMT

I'd rather stay in my lane than lay in my stain!