Ok, I'm NO wiz at computers and I have vista, so I tried following the steps you listed, but had some problems. This is how I did it:
1. Run Regedit
2. Go to HKEY_LOCAL_MACHINE -> SYSTEM -> ControlSet001 -> Services -> Tcpip -> Parameters -> Interfaces
3. Here's where I'm stuck. I have NO idea what the heck all of those numbers in the file names mean. There's only about 5 of them... Is that supposed to be that way? And could someone give me advice on how to figure out which one I should open and edit?
Reminder : I have vista. Anyone else having this problem? Or is it just me?