My rather new HP laptop with Vista had a virus and the operating system had to be reinstalled. Office 2003 was loaded on the machine previous to the virus. I can't reinstall ... have the Upgrade disk and was asked to install Office 97 which I did but then the upgrade to 2003 will not work. It goes all the way through the process including asking for product code and then gets to "Now Installing Office" but nothing happens ... no activity on the Installation Progress screen. Please help.