I reckon I'll have to read up on IIS, yet to gain time, may I ask - could you add to my answers to these questions;
Why would you want to do this?
A: Having separate ports, one would be able to stop/start each site separately.
What would you gain by making this change?
A: Better control of the application I am working with.
Would it work any different?
A: My site would not be interfered by other sites using the same port.
Your comments/answers to each of these questions will be greatly appreciated.