using an IP address for NetMeeting

[shooting star]

I am new to NetMeeting.

i) Does it always only work that when calling someone I need to know that person's IP address?

ii) What would be the advantage of having a proxy server in place, if this works at all with NetMeeting?

iii) I read that NetMeeting used to use an ILS server but now this is done via msn messager, i.e. does this mean one only needs to open msn messager and then find the email address of the person one is trying to call? However then I wonder how I can still call via NetMeeting (using its features) and not only do a voice chat in msn??

Who has experience with the above and can give me some input. Many thanks.

Edited September 4, 2006 by shooting star