I purchased 2 new Dell computers with Office 2007 Professional installed. We removed that software and replased it with Office 2003.
One computer was a replacement and the other is going to be used by a new employee who has not started yet.
Outlook 2003 seems to work until you try to reply to all on a email message, The both computers receive a message Microsoft Office Outlook - The messaging interface has returned an unknown error. restart office