Owl said:
A word of warning - if you created a new pst file in Outlook 2007, Outlook
XP will NOT read it. You need to create a new pst file in 97-2002 format
while Outlook 2007 is still installed, and copy any data from the 2007
version to the 97-2002 file.
To read any 2007 documents you have created, download and install the 2007
compatibility pack after the re-installation of Office XP...