Requirements
 

Server OS
Window Xp\Window 7\Window server 2003/2008

Disk space
A minimum base installation requires at least 300MB of disk space but you should assume that your actual disk space will be somewhat higher.

Web server
IIS6\IIS7

Database server
Sql server 2005 or Higher Version

Browser requriements
Internet Explorer 7 Or  Higher Version/Mozilla Firefox/Chrome/Safari

Other
.net Framework 3.5 or Higher Version/.net Framework 3.5 Sp1