Net Meeing/Port-Forwarding/D-link Router

I cannot get video or audio working on the program "net meeting"    I am currently using the D-link router, comcast cable internet and windows XP.   People have told me to activate port-forwarding but I do not know how.  They feel that I cannot get audio/video because of my rotating IP address.  I have absolutely no idea.  I am a basic at all of this and require this connection for my master's program at UT.  Help.  I am lost and don't know where to go.  
helofisch
helofischAsked:
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bbaoConnect With a Mentor IT ConsultantCommented:
> I have already defined the XP box as a DMZ host.

o? according to what DLINK 624G's manual (page 23) says? if your XP box still can not accept incoming netmeeting call, your XP's ICF might have been enabled by default. please have a check.

ftp://ftp.dlink.com/Gateway/di624_revC/Manual/di624_manual_103.zip
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bbaoIT ConsultantCommented:
you need to enabled port-forwarding on TCP port 1503 and 1720 for incoming call of netmeeting, the destination IP should be the internal IP of your XP box. i am sorry that i can not give you the detailed instructions at here because i dont know the exact model of your dlink router. you may tell us the model if you need further help on configuring the router.

if you enable only above two ports, you can get the incoming call and establish the connection, then you may share the screen and whiteboard, transfer files, and chat with each other, but sorry for NO audio and video support, because netmeeting needs additional incoming traffic on dynamic ports, which your router might donot support.

if you define the XP box as a DMZ host, i think you may get all what you need, but anyway, you have risks on security.

for more information about netmeeting and its related port usage, see the following MSKB article at:
How to Establish NetMeeting Connections Through a Firewall
http://support.microsoft.com/?id=kb;en-us;158623

hope it helps,
bbao
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helofischAuthor Commented:
Bboa:

I can already get the whiteboard to work, I just can't get audio and video.  My router is a d-link 624 G.  Could you give me step by step instruction to enable port forwarding.  I have already defined the XP box as a DMZ host.  

thanks
helofisch
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