jimbo-ice,
Do you by any chance have the NetSafe security package as part of your Atlantic Broadband service (see the link below)?
http://atlantic.highspeed.com/

That also has a firewall. I'm running out of ideas here
You could search your comp for NetSafe...see if anything shows up. Or have a look on your documents from your ISP, you might find some info to tell you whether you have that package.