Hello,

I'm guessing,

are you using a "full IIS" to serve your pages or the one embedded in Visual Studio?
I've no experience with the regular Visual Studio but I can say that with "Visual Web Developer 2005 Express Edition" it seems sometimes not possible to connect to the embedded webserver with an address different from "localhost".

You can try to workaround this limitation including an entry like the following in the hosts file (WINDOWS/system32/drivers/etc) and accessing that url:
Code:
127.0.0.1    mypc.mydomian.com
Or you can try a redirector like this one for firefox (I've not tried it)

Let me know if solved.