My old linksys router had a setting to allow UPnP on the network. As well, there was "UPnP Forwarding" I could set up. It helped my bittorrent client as well as a few other things like MSN Messenger communicate better.
That router's a switch now. I now have windows server 2003 as my NAT gateway, DNS, DHCP and WINS server.
What is the UPnP stuff all about? Where are those settings on my server?