Hello,
I'm the author of the MOD upper (sorry, it's French only).
To answer segasonicfan :
Yes, games check Mega Drive/Genesis for the country protection, but if you switch your Genesis in view of playing import, (ex : european games on a NTSC Mega Drive/32X set), you'll get a black screen because of video standard optimisation from your 32X.
The 32X is optimized to work with NTSC or PAL video depending the country, so when you switch your Genesis into Mega Drive (PAL), your Genesis 32X (which is working in NTSC) will lost synchronization and you will not be able to play...
That's why, to play all 32X games in world, you have to switch you Mega Drive/Genesis AND your 32X
Anyway, all european games where also released in North America, so I think it's not necassary to switch your 32X... For japanese games, only Genesis switch is necessary.
Ciao