Hi,
First let me point out the obvious: forming a team before you know what making a game actually involves is a bad idea. Learning how to make games takes a while, and some people on the team are likely to lose interest along the way. A better choice would have been to make a few games on your own and then form a team once you have some experience under your belt.
Second let me point out why nobody has answered your question: it is very open ended. Do you want to know how to manage people, how to divide the roles of creating a game, what roles there are in the first place, how to manage a project with different time zones involved, etc...
If nobody understands the question don't expect any answers.
Also: (this isn't aimed at you but rather at all the beginners reading this) please take the time to read the sticky posts. We get the same "where do I start" question every day - it gets tiresome and that may be the reason nobody replies.
Now, to actually answer your question: I suggest you practice as a team. That is: find yourself a few decent tutorials and make a small project together.
- for the programmers you look up a tutorial on how to make a tetris game (yes, tetris! Don't expect to make mario on your first go).
- for the artists you look up a tutorial on photoshop or maybe how to make pixel art
- for the audio guys you make them follow a tutorial on composing an 8 bit track or maybe an XACT tutorial if that's what you're using
- ... (you get the gist by now)
The idea is to give everybody a chunk of the project to bite into. The fact that you are all working on the same game will help keep everybody motivated.
Make sure you keep your ambitions in check - ten small steps (i.e. projects) is better than one huge one.