Bootlegninja, you said that you have used Gameshark 4.0 on both your PS1 and PS2, by this you mean that you were able to use Gameshark to load PS1 games on your PS2, correct? (Not that you were able to play PS2 games on the PS2 by using Gameshark). Or am I wrong, is it actually possible to load a PS2 game with Gameshark?
Additionally, do you know if just about any version of Gameshark will work for swapping PS1 discs on a PS2? I've heard people say on some forums that you need Gameshark v2, or the bonus disc, or it has to be Gameshark lite... but I'm wondering if this wouldn't work with any version. Any thoughts?