I have XP installed on 12 systems in our SeniorNet Computer Learning Center and I have Office 2003 installed also. In addition, I have VISTA also installed on all of these systems (using the VISTA dual boot capability) and I have Office 2007 installed on the VISTA side. When we ran Microsoft Update on the XP side this weekend, it also found and installed Office 2007 updates. My concern is that since we were booted on the XP side, if there were any registry entries/changes, they were probably applied to the XP registry although Office 2007 is installed on the VISTA side. Do I have a problem?