QUOTE(Heimdall @ Oct 25 2008, 08:29 PM)
You might also be able to use a wireless NIC in your computer in ad-hoc network mode, but there are a couple of things that might cause problems:
1. I have no idea if the 360 wireless adapter can be configured in ad-hoc mode.
2. You would have to set up a network bridge in your PC between the wireless NIC and your wired Ethernet connection, and that can be a nightmare to troubleshoot.
And, of course, it would only work when your computer was turned on!
The access point is by far the simplest solution.
I used a Linksys WGA11b (Ebay) Wireless bridge to connect to my home wireless, works fine with live and all....decent speed. I'm still running older wireless (80211b). I know Linksys has a Wireless Bridge for A networks (54), but the cost of the wga11b (i got it for 25 shipped) is a lot less. I don't know what the Xbox adapter costs, but I think its more....one of the guys I work with use wrt54g wireless router with the dd-wrt firmware to support wireless bridging and says it works good too.....plus the firmware dd-wrt unlocks that particular router and really allows it to shine.