OL2000 Microsoft Outlook 2000 Update - This update fixes an issue with Outlook 2000 in Internet Mail Only (IMO) mode after the Microsoft Office 2000 Service Pack 3 (SP-3) is installed, in which Outlook 2000 reminders may not behave as expected or they may use 100 percent of the CPU when they appear. The installation of this update requires that you have previously installed Windows Installer 2.0 and Office 2000 Service Pack 3 (SP-3).