We have created a distribution list with a pst extension in Outlook 2000. We then went into a users Outlook and then go into FILE, OPEN, OUTLOOK DATA FILE. Access the address book pst file. It opens just fine and adds it in Personal Folder. When I go into the properties of this address book and try to add the address book to local address book, the check box to do so is grayed out. I cannot add it. Need help.