Lotus domino 8.5 and iis 7 configuration using websphere plugin

I installed lotus domino and it works on a certain port on windows server 2008 now i want the lotus domino to be configured such a way that any request on port 80 comes for lotus request it should be forwarded to lotus domino server by iis7. We followed the documention " http://www-10.lotus.com/ldd/dominowiki.nsf/dx/Configuring_the_WebSphere_Plugin_for_IIS7?OpenDocument" and configured it on iis7 but we are not successful in doing that, we are unable to find a solution. If some one knows how to make it work do post a solution.