Thanks, I appreciate the help!
1) I haven't tried, I will try today.
2) I have done that, In fact the wired PC is off-line and I removed it from the Xbox (as far as an extender). The Xbox still does not see the wireless PC. The Extender does NOT do well with multiple hosts and I have made sure that the wired PC is offline while trying to get the wireless PC connected and that the wired PC is not already "married" to the Xbox.
3) Interesting, how do you get the 8 digit code you need to connect, initiating from the PC? I say interesting because the Xbox (in my case) is smart enough to give me the code, so that tells me that the Xbox sees the wireless PC but the wireless PC still can't see the Xbox.
The strange thing is that in the device map (on the wireless PC) the Xbox shows up and in the shared devices the Xbox shows up. The firewall is turned off, AV off, UAC off, I've given permision to the root of all drives to "Everyone" (for testing only) and I'm at a loss as how to make the wireless PC any more open.
I'm still new to Vista and all it's security so there may be an issue there that I am missing but that still doesn't explain why the wired PC can connect. Another thing I didn't mention is that the router (Linksys WRT55AG) is also wide open except for WEP but that shouldn't matter since the Xbox can connect to Xbox Live.
I've spent another hour and a half on the phone with Microsoft and I finally got in tough with someone who understood what an extender was but we got nowhere.
I will try to share some media from the wireless PC to the Xbox and we'll see where that goes but I still think it comes down to something that Vista is doing to block wireless connections or like I said earlier the wireless Xbox NIC that I can't find any info on.
Thank you for your suggestions, I appreciate all your help. I'm over my head and I appreciate any support I can get!!!
Thanks,
Tom