I have a canon powershot S50 and I generally take my pictures at 1600x1400 then resize them to 800x600. I would like to print some of my photography, matte, and frame it for some personal touch to my room, but I do not know how big I can print an 800x600 photo out without it looking like shit. Is there some kind of rule of thumb for the size of the picture and how big you can print it? I would like them to be like about 20 inches by 16 inches or whatever... Comments?