A reminder to anyone still using the Office 2010 beta – your time is running out. The beta expires at the end of this month and you’ll either need to buy (or try) Office 2010 or downgrade.
A pst used in Outlook 2010 will work fine in Outlook 2003 or 2007 however you will need to make a new profile to use with the older versions of Outlook.
We recommend uninstalling Office, rebooting the computer then installing the replacement version. If you stick with Office 2010, everything should “just work” after installing the RTM version. If you downgrade you’ll need a new profile and may need to run fixmapi.
Links to Try or Buy: http://www2.buyoffice.microsoft.com/