I have a relatively new installation of MS Exchange server 2007 that needs the product key entered. Exchange was installed using the downloaded version of the software. I have a "Software License Agreement" for MS Exchange Server 2007 along with 2007 Server User CAL's. This is a 'Select License' for a school district and was purchased as a 'Cooperative Softwre Purchasing Software License Agreement' from our regional service center. According to the license, I should use the Product Key on the CD to register my Exchange server. My CD is for the 2003 version of Exchange. I cannot get Exchange to accept the Product Key from the CD. I've been working with the service center and received a second copy of the media. The Product Key on that set of media also failed. What can I do to get my Exchange server registered? Marcia Philbrick Nemaha Valley High School Seneca, KS

Click Product Keys from this page: https://www.microsoft.com/licensing/servicecenter/home.aspx?1033

Something that I just recently learned, also. Make sure that you enter the right product key the first time. If you enter a Enterprise Edition key and then later on want to license the server as a Standard Edition server, the only way to do this is to RE-INSTALL!!!!!