I am trying to run Exchange 2000 and ISA on the same box. I am also running a webserver on another internal server. I need to get the default IIS website running on the Exchange/ISA server so I can administer my Exchange public folders. I have my ISA server set to listen on the external interface on port 80 (for my other internal web server). I configure IIS default website to listen on the internal interface port 80. When I try to start the default IIS website on the Exchange/ISA, I get a message saying the the address in already in use. I know ISA is holding on to port 80 on the internal interface. How do I get ISA to give up the internal port 80?