Using Windows Netmeeting with CF


I need to be able to let my friend in the USA call me in Netmeeting(Windows XP).
When they try to call me(set to auto answer)they cannot.
When I try to call them then the same results, I cannot connect to them.
They have nothing blocking Netmeeting.
I read the post in the forum on how to setup CF to allow the use of Netmeeting but I cannot understand what I have to do.
Sorry but I had a stroke some years ago and it messed up part of my brain.
Can someone please help?

bump, same problem here.