I searched for iChat on the boards and did not find an answer, but if there is a thread, please point me towards it.

I recently bought a MacBook and it's going pretty well. I have been having trouble with iChat, though. My internet service in my apartment is through Comcast and I have a Netgear WGR614 router. I have turned on network security.

I have tried to initiate video chats with a colleague with no success. Even if I use two computers in my apartment on the same wireless network, no luck. One can make the invitation ,but even if the person accepts, the initiator gets a message that the other person failed to respond.

I was at my colleague's place the other day an iChat works there (not Comcast and using an AirPort router). iChat also works at my in-laws place (Hawking router and Verizon DSL service).

I have a list of blocked ports from Comcast:
67
68
135
137
138
139
445
512
520
1080

Did a web search and tried opening these ports:
5060
5190
5220
5222
5298
5353
5678

Still not working (though I have to reboot the router)

Does anyone have suggestions? I figure there have to be a few people using iChat to stay in tough with loved ones on the road!

Text chat works in iChat, but video and audio chats do not.

Thanks in advance...

fuzz