Do you know which firewall Rogers is giving you? The only info that I can find suggests that it's NPF: Telus, Shaw, and Rogers provide free virus and Internet protection |

In that case, the link at the bottom of this post has further links to configuring Norton's firewall Also try removing all FW rules & then reconfiguring.

Before you set up port forwarding, did you set up a static IP address for your computer? You'll need to
The instructions are here: PortForward.com - Free Help Setting up Your Router or Firewall

And when you set up port forwarding, did you use these instructions (refers to LimeWire but that's fine because everything's the same & FW isn't in the list of programs yet): Port Forwarding for the Linksys WRT300N

FW's listening port, port in the 'manual port forward' box & port forwarded within your router must all be the same number.

There are other different fixes to try in this thread: If LW 4 Will Not Connect

Don't worry that it refers to LW - things are the same for FW. Where you see 'LW' or 'LimeWire' just substitute FW or FrostWire