I just came to know about a software called SKYPE, which can be downloaded free of cost from www.skype.com. It allows you to talk to anybody round the globe free of cost(that is except the internet cost, of course)….!
You just need to have a microphone or something similar at both terminals and the software…and probably dsl to make it faster…
It’s clarity is better than any of the messenger services we have..
Try it out, it’s amazing. Add a webcam and you could have an online conference…
Happy chatting!!