once you have downloaded the codes to your Gameshark they will remain there.just like if you had entered them manually.pop your gameshark into your PS2.make sure you have installed all the software that comes with the shark port(1 cd for your PS2 and 1 for your PC)make sure your PS2 is hooked up to your tv and ready to go.then just hook the shark port from the PS2 to your PC(you'll need a USB port, most PC's have one in the back)go to gameshark.com to start downloading saves and codes for games.the book that comes with the shark port explains it much better.you'll also find help at the gameshark website. :thumbsup: