Its a crazy idea but what I am trying to do is create every combination possible of a 640x480 bitmap file.

After that you could also generate all possible novels up to 500 pages, so I will finally get rid of the monkeys in my basement ;-)

Seriously, the number of all possible images is *real* huge, and even if you managed to save them somewhere, indexing them would be as difficult as generating them. In order to retrieve a specific image, you would somehow be able to indicate "I want the image whose first pixel is 0xa, whose second pixel is 0x0 ..." and so on with all the pixels. It is more reasonable to just generate it on the fly (and it allows you to save a few gazillion bytes).

Cheers

Antonio