PS3 Controller to play 360?

I'm trying to convince a friend to buy a xbox360 over the PS3. The only reason why he wants a PS3 is because he plays Madden on the PS2 and wants the controller to be the same. I've tried to google this and came up with people sticking their PS3 buttons into a xbox360 controller (I don't get why but whatever) but does anyone know of a way to get the PS3 or PS2 controller to hook up to the xbox360?

The PS3 controller is different from the PS2 one isn't it?

I think the PS3 controller is too light, it's tiny, and the triggers feel really cheap and flimsy.

Thanks for that information, I see what your saying there with that adapter. I will try to find that adapter online, Thanks for the help.Stix_3200