I urge you to try Skype.
There is a quick, single download from Skype's web site , and that, amazingly to me, is about it.
Here's what I learned yesterday:
While I was waiting for a scheduled call from Rick, Michelle called me.
You know the situation: "Oh Hi Michelle. Look, can I call you back in half an hour or so? I'm expecting a call from Rick".
Sure, says Michelle, no problem.
Except for this über-geek I sometimes just don't get it!
So, five minutes later it dawns on me.
Michelle is on Skype!
I call her up on Skype and we chat, comfortable in the knowledge that when my land-line rings I'll have to drop Michelle and deal with Rick.