Microsoft Exchange & Server 2007vs 2003

I was wondering if we purchase 2007 for either MS Exchange 2007 or Server 2007 will we get licenses for 2003. Were currently still on the 2000 version. Our preference is to go to 2003 while the 2007 version is still being tested. 2003 is no longer an option on this site.

any advise?

You buy the 2007 license, but when you go to acknowledge and register the license on the eOpen website (https://eopen.microsoft.com , use Internet Explorer or you won't be happy) - it will provide the installation codes for both 2003 and 2007. As for installation media, I believe at this time they'll ship either just 2003 or both 2003 and 2007. If you only get 2007, you can call and of the charity license providers found here and order the installation media for something like $20.