I will assume that you want to replace your current
outlook.pst file with your old outlook.pst file. What I
do is burn a CD with the old outlook.pst file. Then copy
that file to the new Outlook.pst location. If you are
doing this over a network, you won't need to burn the CD -
although it is probably faster. If you are going from
one HD to another in the same box, just drag and drop in
Windows Explorer. Once you have replaced the new "pst"
file with the old one, all of your old emails, contacts
and calendars should be there when you open Outlook.