You should not need to do anything to IIS unless you are running multiple sites on the same IP.
1) Open up the Microsoft Console and select the DNS snap-in or click the link from the start menu to the DNS Manager.
2) Select the domain/zone you want to edit.
3) Then click select the DNS menu and then select Add Record and select A record. Put * in the hostname and the IP address of the website in the IP address bit and click okay. (note: do not try to take a shortcut by selecting add hostname, for some reason it doesn't like this).
Linear Mode
