You cannot go over 2gb upload or 4gb download over any 7 day period, on either wireless or wired internet. If you do either of these on either connection, your internet on that connection only is blocked, but not necessarily for 7 days. It is only blocked until the past 7 days are under the limit.
Keep in mind that if you use a wireless router in your dorm room, it still counts as "wired". For this reason, you should put a password on your router so people don't steal bandwidth.
Unless you are using bittorrent or downloading entire movies from Netflix, bandwidth should not be a problem. Filesharing on the Rutgers DC++ servers does not add to your bandwidth total, so download as much as you want. It is also much faster than bittorrent.