Yep.
See:
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wireless devices, see:
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basic idea is to have the router and client be automatically configured. I theory, all UPnP network devices self configure themselves when you plug them in. The most common application is for MSN Messenger to punch holes in the firewall so it can communicate. If the router supports UPnP, then a client that plugs in be automatically configured and ready to run when first connected. This is more than DHCP, which traditionally only delivers IP addresses as UPnP will also deliver Windoze settings and options.
You can watch it work by enabling UPnP in the NAT router, and in the XP client. Then, dive into the router port forwarding configuration screen. You'll find that you now have two extra ports forwarded for every XP workstation, each allocated to MSN Messenger.
There are some bizarre rants on the net about security holes and flaws in UPnP.
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's a good and sane summary by one of the authors of UPnP:
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it doesn't really cover the fundamental issue of whether you really want your clients re-reconfigured by the first router it blunders across, or whether you really need your firewall Swiss Cheesed full of holes by uncontrollable services.
I turn it off in both the router and the client.