Calendar Items Don't appear after migration from Outlook 98 to 2003

I have copied my outlook.pst file from my old computer
running Windows 98 and Outlook 98 to my new computer
running XP and Office 2003, but none of the events I have
entered into the calendar appear. I put the outlook.pst
file in C:\Documents and Settings\username\Local
Settings\Application Data\Microsoft\Outlook. The Outlook
program is clearly opening this outlook.pst file when I
start it, because if I rename this outlook.pst file to
something else and then try to open Outlook, I get the
message that the file C:\....\Outlook.pst could not be
found. Nevertheless, none of the events I have listed in
my calendar appear. The calendar is blank.