Just curious how do you want to store a RGB like image of a cam on a arduino, or what would you like to do with the received data.
Because I mean even a small cam lets say (800 x 600 pixels x 3 colors) requires 1.44 Mb thats more then a arduino has.
( i'm curious since i had been thinking of using cams with arduino to, and then abandoned the idea in favor of a cheap ITX motherboard )