You can use Wifi with ROMs just as if it's the original game. So there's no need to worry.
There's only one ROM that I know about that won't work online, it's called Jam with the Band. But nothing will happen, you'll just get an error message.
naavadi, it's nice that you're so active, but I'd like to ask you to keep all your questions in one thread for now. Then it's easier for us to answer them.
This post has been edited by Clookster, Wed, June 29th, 2011 at 09:28