SVCHOST and D-Link Router

[jeffss23]

Looking at the firewall rules on my DI-604 router (hardware A2, firmware 2.20), I have an entry called "Svchost (192.168.0.100:1036) 49" that is set to Allow from WAN, * to LAN and my system through UDP ports 1036-49348. I couldn't manually change this. Resetting the router got rid of it for a while, but now I have a different one instead, "svchost (192.168.0.100:2264) 53", set to allow as before, through UDP 2264-5320. Is this supposed to be there, or is something going on (some sort of hack, spyware, etc.)? And if so, how do I fix it? I am using Windows XP. I have the latest McAfee Viruscan and haven't found anything on that.