Do NOT remove OpenGL, this will create you a lot of problems. Network: IP Conferencing - remove Map Network Drives - remove MSMail - remove NWLink IPX - remove if you don't use the IPX protocol for your LAN Tapi - remove Operation System Options: Command Line Tools - remove and set in the save box only: ipconfig.exe, netstat.exe, ping.exe Esent97 - remove Extra Fonts - remove Format Drive support - remove OS2 - remove Posix - remove Services: Distributed Transaction - remove MSMQ - remove Performance Logs - remove Secondary Logon - remove TCP/IP NetBios helper - remove Just to name a few I would keep application compatibility and 16 bit support. You either have removed some essential components or they are not available on Win2000