You can just use HTTP redirect -
http://technet.microsoft.com/en-us/library/cc732969(v=ws.10).aspx
For DNS - just create to name record and point to the same server IP.
You can just use HTTP redirect -
http://technet.microsoft.com/en-us/library/cc732969(v=ws.10).aspx
For DNS - just create to name record and point to the same server IP.