Hmmm...I was deciding on whether to post or not earlier but I'll give it a shot. From what I've heard about gaming adapters, they usually take the complications out of setting up any other way. What I would suggest is you giving the 360 its own static IP address. I'm not familiar with Xbox networks settings, but I assume you can access this (as you can on the PS2) and manually input the numbers. After that, you would have to go into your Linksys router settings and manually do more or less the same thing. Also, go to this site, Portforward. Choose your router. There is a guide for Xbox Live guide under "X" for you follow on the following page after you choose your router