Purchased and installed Outlook 2007. Received error message when opening Outlook for the first time:
"Cannot open your default e-mail folders. Outlook cannot start because a data file to send and receive mail cannot be found. To ad a data file, such as a personal folder file, double-click the Mail icon in Windows Control Panel."
If you don't see the Mail icon in the "classic view" control panel, click on this icon instead "View 32-bit Control Panel Items". Voila - there is the mail icon. Click it, then click "data files". Add a new data file. I put mine in C:\Users\abc\Documents\Outlook (you'll have a different user name than 'abc').
Restart Outlook. It should work now!