Cannot start Microsoft Office Outlook. MapI32.DLL is corrupt or the wrong version.

Office 2003 is compatible with Windows 7. However since you are having problems, try the following:

Rename MSMAPI32.dll to MSMAPI32.old.
Then try and start Outlook again.

The file path is C:\Program Files\Common Files\System\MSMAPI\1033 or do a search for MAPI32.dll.

If the rename doesn't help, then run fixmapi.exe - it's in one of the office folders or use search (use
advanced options for looking in hidden files and folders).