Hi Nich,
Office 2003 isn't included on the Office 2007 media and uses different license keys. If you have a volume license with 'Software
Assurance' included you can use a 'downgrade' option (
http://microsoft.com/licensing) to apply a license for use in an older (than
current) version.
You can phone the license folks from the numbers on that web page for assistance in getting the license and media you may need.
============My whole office is on 2003. I need to add another work station to the
network - I bought an open license for 2007. Do I install from the 2007 CD that came with the media kit?>>
--
Bob Buckland ?

MS Office System Products MVP
*Courtesy is not expensive and can pay big dividends*