Does anyone from Microsoft read this group?

I see a lot of questions that should be very basic, but have no answers, or
if they do have answers they are from other users.
No authoritative answers.
I am having the same problem that many others are. To put it very simply,
My network worked just fine with XP. I have multiple computers on the same
network. Vista RC1 does not connect outside my local network. The only help
from Vista suggests that the problem is with the router, which obviously is
wrong because I am sitting at my other computer right next to vista computer
typing this message.
Obviously there is something about Vista that does not like my connection
and is unable to clearly relate this information.
My internet connection is via Canopy which has a NAT router and firewall
already installed. Disabling the Vista fire wall does not help.