Office install is rather complex and not very clear. I would suggest you do a System Restore back to when it still worked correctly.
I am using Windows XP Home Edition. I am using Microsoft Office 2003 Profession Edition. 2 weeks ago, some of office files have been corrupted; I don't know how it happened. I tried to repair it via using Office CD-ROM, but no vain. When I click on any program of office like word, excel, a dialog box opens which has message preparing to install and afterwards, message box displays short error. When I tried to remove or change in Add/Remove program utility of windows, then there is nothing to progress. When I tried to uninstall it via CD-ROM of Office, message displays that Uninstaller package does not support. Kindly help me in this matter.