"Index could not be created: There are no active http servers known at the

Above error shows up during Index creation on KM section of the portal.

Checked the TREX Admin tool for Http connection . Pop up Error saying "IIS not installed. Configuration of Http communication not possible ".

Environment : TREX 7.1 revision 43 on Windows 2003 64 Bit platform.

During installation of standalone TREX , there were no option to select "http server".

Please suggest, if i am missing some thing in the setup or configuration here.

Thanks in advance .