Xbox can't connect to PC

Hey guys, need some urgent help from you all. I am using Windows XP with Windows Media Player 11. I have enabled Media Sharing from the settings. Also I tested the connection and can see Xbox on my computer. But when I try to search PC in Xbox, it just cannot find any PC.

I don’t have enough knowledge in this. So can anyone of you guys please help me out?

I think there might be something wrong in router settings. BTW, have you enabled UPnP?

Mean while you should check out this discussion on same problem, hope you’ll get some help:
http://forums.techarena.in/media-player/1366403.htm
http://forums.techarena.in/mediacenter/1456785.htm
http://forums.techarena.in/media-player/827907.htm
http://forums.techarena.in/media-player/853384.htm

Hey, I’m also struggling with same problem. I checked my UPnP is ON, also all settings under linksys WRT54GS seems to be fine. I even checked above mentioned articles but none of them worked for me. Is there any working solution for the same?