hi Arun,
As per my experience, You can easily install on Server version such as Window server 2003/2008 while It is not easy to install on Windows XP, Vista and 7(specially Windows 7 Home edition) because me and other technical colleagues tried to install and faced lot of problems and at last they installed on server version.
If you still want to install on window 7 then you first install on VMware software and install Netweaver in it but still you need server version for virtual machine.
hopes, my exprience also helpful for you and other scn user.
Regards,
MAJAMIL