We are using Exchange 5.5 which came with BackOffice 4.5. Outlook 2000 came in the box. Do I have the right to install and use this Outlook 2000 on any PC that I have an Exchange CAL for? Also, we were just forced to upgrade our CALs to Exchange 2000 CALs. We still use Exchange 5.5 however. With the Exchange 5.5 and the Exchange 2000 CALs, do I now have the right to install and use Outlook 2002? If I can use Outlook 2002, what do I need to get Outlook 2002 install media?