Did you properly configure your Norton Firewall. Instructions here. http://www.gnutellaforums.com/showth...threadid=30505

Also it is not a good idea to run your windows firewall and norton firewall at the same time.

I just looked up your modem here. http://www.sprintproductsgroup.com/p...odemRouter.pdf

You may have to do port forwading. You can search(upper right)
for -- Port Forwarding --

Best of luck