Messanger 4.6 Video Conference issue

[NelsonC]

I need some help, I just got a web cam and I've been using my RT311 router (netgear) and it works great, but everytime I try to do a video conference it never let's me connect.. what ports do I have to forward (i am currently forwarding 6891 -- 6900) and no success any ideas? messanger 4.6 (router firmware ver 3.26 (latest) (windows XP)

Thanks guys