Operating System Requirements30 Netscape Directory Server Installation Guide • December 2001At this point you will need to install Service Pack 4 or later, if not already installed.This is needed for the installation of Microsoft Internet Explorer 5. Service packscan be obtained from http://www.microsoft.com/windows/servicepacks/You will need to install Microsoft Internet Explorer 5 or later, as this is needed bythe Security Configuration Manager.The Microsoft Security Configuration Manager is located on the Service Pack 6aCD-ROM, or can be downloaded fromftp://ftp.microsoft.com/bussys/winnt/winnt-public/tools/scm/. Thistool is described in Microsoft Knowledge Base article Q195227.Ensure That the System Clock is Correct and Kept AccurateSo that date and time stamps in log files can be correlated with those of othercomputer systems, the system clock should be kept reasonably in sync. As the NETTIME command requires NetBIOS, which will be disabled during post-installationsystem configuration, either a TCP/IP based NTP client should be installed (suchas the shareware program Tardis), or a time radio receiver attached. Seehttp://www.ntp.org/ for more information on NTP clients for Windows NT.Install Windows Service Packs and HotfixesWindows NT Service Packs include key fixes that are necessary to maintain thesecurity and reliability of the operating system. The hotfix series containsimportant changes for problems that were found after the service pack wasreleased.Install Windows NT 4.0 Service Pack 6a or LaterIt can be obtained from http://www.microsoft.com/windows/servicepacks/.The system will reboot after the service pack is installed.Install HotfixesDownload and install any Windows NT 4.0 Hotfixes that are for the service packthat is installed on the system, such as post-sp6a for Service Pack 6a. They can beobtained fromftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/nt40/. Itwill probably be necessary to reboot the system after each hotfix is installed.