You can run IIS on any port you like, as long as it does not conflict with other applications. I am using 88, 8888 and other easy to remember ports.
You can find the common used port here: PORT NUMBERS, and it is safer to choose an unassigned TCP port.
Quote:
The Dynamic and/or Private Ports are those from 49152 through 65535
If IIS is working and you have troubles with an ASP.NET applications, those links might be helpful:
- How to: Configure ASP.NET Applications for an ASP.NET Version
- ASP.NET and IIS Configuration
- ASP.NET IIS Registration Tool (Aspnet_regiis.exe)
- IIS and ASP.NET: The Application Pool
If you are still having troubles, it would be helpful to provide more information about your environment, the steps taken so far to solve the problem, and retagging the question (append asp.net for example)