OS: Windows XP

I recently upgraded from MS Office XP with Front Page to the Ultimate Office
package. I can use all the applications with the exception of MS Office
2007. When I start it up, it gets to the migrating account settings and
instantly states "Microsoft Office Outlook has encountered a problem and
needs to close. We are sorry for the inconvenience." I have uninstalled
Active Sync and my blackberry software with no change. What can I do to get
Outlook to work?