Does Rogers filter ports 135 and 445?
What happens when you folks run GRC ShieldsUp port scanner? www.grc.com
Do you see ports 135 and 445 as closed (and not stealth)? If so, is Rogers filtering these ports (and, therefore, the tests for those ports aren't even reaching your computer or router), which would be the reason for the "closed" result?
DCOM Service Control Manager
Microsoft's DCOM (Distributed, i.e. networked, COM) Service Control Manager (also known as the RPC Endpoint Mapper) uses this port in a manner similar to SUN's UNIX use of port 111. The SCM server running on the user's computer opens port 135 and listens for incoming requests from clients wishing to locate the ports where DCOM services can be found on that machine.
Microsoft Directory Services
This port replaces the notorious Windows NetBIOS trio (ports 137-139), for all versions of Windows after NT, as the preferred port for carrying Windows file sharing and numerous other services.