This could be one of the solutions to the standard problem are facing,we that of the name based Web Sites not starting on the same shared IP and Port 80

Host headers is what allows you do do name based Web Hosting. ie IIS looks at the httpd header information for the hostname and returns the correct site depending on that information.

Webppliance automatically sets up web host

headers for the domain.com and www.domain.com

If you add additional web host headers (say you want domain.net aliased to domain.com) remember that Ensim does not add the additional domain to dns. You have to add that manually.

So, the next time we come across such a situation (which is not to infrequent as far as I remember), please try to implement the above and check out it it does really work.