PC Doctor recommends Skype.
Skype is a free internet telephone service where you can talk to other Skype users for free, or make cheap telephone calls to anywhere in the world to either a landline or a mobile. It's ideal for home users and businesses who can save a fortune on long distance and conference calls. Skype also supports video conferencing and many other features. Click the link to the left to download and start using Skype.
The doc offers a Skype installation, setup and training service for those who don't know how or don't feel confident enough to download and setup the software. This can be done remotely or at your home.
(Please note that I am not selling the Skype software. Skype is a free service and the software is free. I am simply offering a service to download and install Skype for people who do not know how.)