link:
rapidshare

Standard features

If you and your friends, family or business contacts are using webcams, you can also make free video calls. You can even call landlines and mobile phones at really cheap rates.

* Make free Skype-to-Skype calls to anyone else, anywhere in the world.
* Call ordinary phones and mobiles at pretty cheap rates per minute.
* See who you are talking to with video calls.
* Send SMS messages to friends on the move and set up call forwarding so they can contact you.
* Group chat with up to 100 people or conference call with up to nine others.
* Free to download.

System requirements
* Mac computer with G4 800 Mhz processor or faster.
* Mac OS X v10.3.9 Panther or later.
* For higher-resolution video a faster processor (Core 2 Duo) and a broadband connection with at least 384kbps upload speeds.
* 512 MB RAM.
* 40 MB free disk space on your hard drive.
* Microphone and speakers or headset.
* Download drivers for your webcam.
* Internet connection – broadband is best (GPRS is not supported for voice calls).

link:
skype