My 990 students converted me to this service for conference calling and international calling--all you need is a headphone with a microphone.
It's free!
And you can IM using it too.
http://www.skype.com
My 990 students converted me to this service for conference calling and international calling--all you need is a headphone with a microphone.
It's free!
And you can IM using it too.
http://www.skype.com