I'll start you off with the best option, the Gameshark CDX Demo. Load the disc Demo CDX, and goto Start Game, now Start game without codes (or with codes if you have selected codes for your game), when it tells you to take out the CDX, take it out and replace it with the import that you wish. This CDX has the best compatibility out of the Utopia Boot CD, DC Hakker, and the Gameshark/Action Replay pay CDX. The best part about it is free, and you can download the DiscJuggler image here. It also contains codes for Crazy Taxi, House of the Dead 2, Rayman 2, Sonic Adventure, Soul Reaver, and Tomb Raider 4.