VGA Box Mods

Does anybody out there have any information on how to mod your VGA box? (ie, alter it so it's possible to play all copied games on VGA. I know it's possible, I just don't know how).

[BoNzO]

Hey,tell me if you find out man... I really don't feel like blowing the $$$ on a new Treamcast VGA box that is backup compatible after I bought an official SEGA brand one. If anyone knows how to fix the SEGA one, that would even be better (I know it has something to do with moving the ground wire around). Kinda funny now certain games work with it already (Chu Chu Rocket, Santo De Amigo, and Street Fighter 3rd Strike).