is there some thing i can get so i can plug my gamecube and future ps3 to to a usb port on my laptop.
Are you talking about hooking up the Gamecube so you see the screen on your laptop? If so, you'd need a video capture device. I've seen some for that purpose that connect to a USB port. I'll have a look around and see if I can find them again.
Here's one at Tiger Direct. It should give you an idea of what to look for and price.
alright thanks, i was looking at that same one before i posted here but i asked becuase i thought it was just for video cameras but you helped me on that so thanks