The adapter is simply an HPNA adapter to convert your Xbox from Ethernet to Coax but you only need that if you have Coax ran. I have Cat5 ran all over my house so I don't need that and the remote is the same remote that came with my HD-DVD player which is also useless if you have a Logitech Harmony remote.
After I posted this I did more research and was able to find someone who posted the ISO image of the disc online and then installed it on my Xbox. Then called AT&T and had them activate my Xbox. Then I sent back my receiver to save the $7/month fee.
I'm a happy camper. No need for the $99 kit and $55 truck roll.
How is this working for you? Can you describe the pros and cons of using the Xbox as a STB?
Also, all I need to do is buy the equipment (total cost of ~$36), find the iso, and call AT&T to activate? My Xbox is not modded... also, my install in in 2 weeks, so I could gather the needed stuff before hand. Finally, I have a router right by the Xbox. Will I need a HPNA adapter? It will be coax to the house, if that matters.
Thanks!