To install Skype, download the latest version
from the Skype website. Do not download Skype from anywhere else.
The Skype install file is about 1MB in size. When you run the install
file, the installer will download the Skype application (about 20MB) in
the background. If your internet connection drops while this is
happening, the installer will resume the download as soon as
connectivity is restored.
If you do not wish to use the light installer, download the full installer
The system requirements for running Skype on different operating systems are described below. Please ensure that your system meets these requirements, and that you have the equipment you need, before downloading the latest version of Skype.
Version : Windows XP / Windows Vista / Windows 7
(32-bit and 64-bit versions supported)
Processor : At least 1GHz
RAM : At least 256 MB
Additional software DirectX v9.0 or above
Hope this helps (remember to rating this answer and leave us a testimonial commetn).