What to use instead of port 80?

[bullerd]

I am trying to install EPO 4.6 and it says port 80 is already in use - probably by IIS.

What port should I use instead?  I'm not an expert in ports.  Can I just try, say, 89 which appears to be free or am I better to pick something from the typically unalloacted range say 62011?

Thanks

[Tristan]

What ever is free really within reason

My Epo server runs Forefront TMG (ISA Server) as well so i couldn't use 80 or 8080 etc

So mine are set as

Agent-to-server communication port:	9080
Agent-to-server communication secure port:	Enabled on port 9443
Agent wake-up communication port:	8081
Agent broadcast communication port:	8082
Console-to-application server communication port:	8443
Client-to-server authenticated communication port:	8444