Hi - Just to show you what I mean here is a screenshot of what I was doing, (sorry its so big) as you can see when I right click on the IP address there is no properties option.
As this was the only IP address and bearing in mind what Steve said then the instance must be the one highlighted.
Also another weird thing is, I have changed the default instance to use 7979 and my named instance to use 7980 by changing the value in the IPAll section. Now if I try to connect to my default instance on 7979 it connects correctly, if I connect to SERVER\WEB instance on 7980 it connects correctly, however it also allows me to connect to SERVER\WEB on port 7979 and brings up the default instance databases.
Surely that can't be right, or have I set my ports incorrectly?