Hi Cosy,
This has come up a number of times.
In general, all you need to do is change the www entry under hostnames and addresses to point to the IP address of your actual website and remember to tell it that it is remote.
You *might* need to reboot the server after that (in some cases I had to, in others I did not). But almost always, you need to tell IE to refresh with Ctrl-F5.
There are instanstances where this does not work - search the forums for specific examples.
Kelvin