Actually, switching from one Office edition to another is not an upgrade -
upgrading refers to moving to the next full release. You would need to
uninstall Office 2007 SBE and then install Office 2007 Enterprise. Your
settings will remain intact for the installed applications that are common
to both editions.
Many thanks for this, I will purchase a new full version of 2007 Enterprise
or Ultimate. I want to reinstall this version of 2007 SBE on my second
laptop how do I get the product key released to authorise this second
installation of the 2007 SBE pogramme?