So, you were lucky enough to get an Xbox 360? Now Microsoft wants you to spend another $100 to get your Xbox 360 connected to your wireless network.

The Xbox 360 Wireless Network Adapter sells for $99.99 on Amazon.com. Other Wireless Ethernet Bridges sell for less money. I have not tried it yet, but I assume you could use a normal Ethernet Bridge and connect it to the Ethernet port of the Xbox 360. It would save you some money.
The Xbox 360 Wireless Network Adapter connects via USB to the Xbox 360. On the other hand the Xbox 360 Wireless adapter looks quite cool. It is tiny compared to the a standard Ethernet Bridge.
Based on our internal reports, there is spotty availability of Xbox 360 bundles on Amazon.com. Right now the Xbox 360 offers are marked as unavailable. On the 22nd several people were able to order Xbox 360 Pro Player's Bundles.