by Sudhakar Dayal.
After search and experiments of several months, to install moodle on windows server 2008 R2, I could find a work-around. At my server I have first installed a WAMP server.
I came to know that IIS Server and WAMP server can exist in the same hardware. My IIS Server localhost listens to default port :80.
So IP Address10.10.2.103:80 takes me to IIS Server and
IP Address 10.10.2.103:81 takes me to the WAMP server at the same hardware. A breakthrough for me !
After successful installation of WAMP server, I have down loaded moodle, and pasted it at C:\wamp\www\moodle
And typing http://10.10.2.103:81/moodle initiated the installation process on the windows server. Now I have Moodle 2.6.1+ version on Windows Server 2008 R2.