Try this for starters:
Steps for Opening a Netgear/Belkin/D-Link NAT:
Open your web browser (aka, this^)
Type in the address bar: 192.168.0.1 (
http://192.168.0.1) Netgear Users: If this doesn't work, try 192.168.1.1 (
http://192.168.1.1)
Newer D-Link routers may also have to try: 192.168.2.1
At the login window, type the router password
Netgear Users: Username: admin Password: password
Belkin Users: Username: admin Password: password (normally)
D-Link Users: Username: admin Password: (blank)
If you are still having problems getting in, try this link. (
http://www.phenoelit-us.org/dpl/dpl.html)
Once you are in, browse the different tabs and look for UPnP
Once you find it, enable it
Save and test your XBL connection