i figured this would be as good of place to ask as any, i'm thinking about getting a mac and my friend says they come with a graphics program, but i'm wondering if it's like paint? or is it more like psp or ps?

also, i just got ps7 and i was wondering, when you print screen something, how can you get it to show up? i'll hit prt scr on a photo, then ctrl v in photoshop but nothing shows up.