when I try to add the 360 to the media center PC it just comes back with "Xbox 360 Not Found"

Can somebody please help me!?!?! This is driving me crazy!!!

--My Setup--
My Vmware server is running on Linux and has a wired connection to my linksys wrt54g. MCE 2005 is running on the Virtual Host and the network type is bridged. I has also disabled the Windows firewall. My 360 is connected to a hub in the entertainment center, that hub has a Linksys WET11(wireless bridge) plugged into it to get connectivity to all the consoles there.

I have a similar problem, i'm running WMC in a Virtual PC container on my WinXP computer. The xbox is connected to my home LAN via a wireless router, DI-624, but unfortunatly the Xbox 360 setup cannot get hold of the xbox. It just keeps saying Xbox 360 Not found. The odd thing is that when I sniff the network there seems to be no network traffic from the WMC whatsoever while the setup program tries to find my xbox, well my wifes xbox actually :-).