In your Windows 7/8 VM, go to Control Panel
> System
> Advanced system settings
> Computer Name
and click Change
. Name this whatever you like, e.g. windows. Restart your VM.
Open CMD or Powershell as administrator. Add a URL ACL entry for your new name on the port of your choice, e.g.
netsh http add urlacl url=http://windows:8080/ user=everyone