NetMeeting

I can't send initiate or receive NetMeeting calls after
installing a GateWay 4 port router. I have disabeled the
firewall and still won't work? Does anyone know what port
that NetMeeting uses that are possibly being blocked by
this router?
I am not really networking, rather just using router to
provide two computers access to a high speed cable server.

Any help appreciated

Bob


Bob