I'm planning to buy a PALwii, what differences must I become aware? I heard that if it has a D2C chipset or w/e, then I must buy a D2pro or something like that?
D2C is the name of part of the wii DVD drive. Older wii's have a different chipset, new wii's have D2C and require a D2C compatable modchip. D2Pro, Argon and Wasabi are D2C compatable modchips. Wiikey, Wiid and CycloWiiz are only compatable with older wii chipsets.
@serane
No bumping and back to back posts - edit your previous message instead.
If you do a search like NDarkness suggested you will find an ton of info here on it.
There's even a sticky for discussion of modchips :)