I have installed Websphere application server which is using port 80 on my system.
I also neeeded SMTP , so installed IIS on WIN2008 Server . But getting following error:
The World Wide Web Publishing Service (WWW Service) did not register the URL prefix http://*:80/ for site 1. The site has been disabled. The data field contains the error number.
It seems that you are actually asking how to change HTTP ports in IIS.
Open Internet Information Services (IIS) Manager (from Administrative tools)
Connections pane:
Actions pane:
Just select the binding http->80 and edit it to meet your requirements.
Repeat for any other sites bind to port 80.