Outlook XP data file

I used to backup my MS Outlook 2000 (run under Win ME) data file
by backing up outlook.pst from C:\Windows\Application Data\Microsoft\Outlook\.
I was recently switched to Outlook XP, I can find the Application Data folder under C:\Windows (runningXP)and the data file outlook.pst
How can I import my outlook.pst file to Outlook XP and where are the data file of Outlook XP located.