I've saved the pst files on a thumb drive.

The mac does not see the pst files on the thumb drive.  Not even in the finder.  The files are there - I see them when it's plugged into the PC, but not the Mac.  I see other files on the drive through the Mac - it's just not seeing the ones I need.

Any ideas?

My PC outlook is 2003

The PC is Windows XP

Mac is new.