From what I have looked up, the DI-524 cannot function as a bridge/gaming adapter. It can only work in Gateway mode.
I recently bought the DWL-G820 bridge/gaming adapter for my xbox 360, and it works good, haven't had a problem so far

. I got it off Compusa.com. They have it cheaper than anywhere else, and it got here in three days

.
A big plus about this one is that it can be configured on the xbox itself, so you don't need to connect it to a computer to pre configure it. But before it goes on the console I'd connect it to a computer and update the firmware, because I don't think you can via xbox.
Borgslayer