You need to set a local host file:
Edit c:\windows\system32\drivers\etc\hosts file: like
This means that when you browse to my-complain.com you will route to the machine where the local host file is set. If you need to route to a different machine on your internal network then an example is:
On Windows 7 and Vista you may need to be administrator to do this.
Set a local host file in Mac OS X
Edit the /etc/hosts file: