I have a WRT54GS 2.1, running Thibor's 201105 build. I enabled UPnP using the router's web interface, and it works almost perfectly. Programs on my Windows XP box can tunnel through the router just fine. However, the router doesn't show up in My Network Places. The client box is running Windows Firewall, which is set up to allow UPnP traffic. I can't figure out what is causing the problem. Any help would be appreciated. Cross posted at the HyperWRT Forum.