I see that there is a lot of interest in installing WMP 10 on Server 2003 so heres a full explanation : extract all the files from the WMP 10 install package and find these files CODECS10.INF DRM10.INF MPCD10.INF MPPRE10.INF MPSTUB10.INF WMDM10.INF WMFSDK10.INF WMP10.INF WMSET10.INF WPD10.INF WPDMTP.INF these files contain the line ClassGUID = {F5776D81-AE53-4935-8E84-B0B283D8BCEF} just put a semicolon in front of that line or delete it from each file. now, select all INF's except WMP10.INF ( there are 15 INF's ) , right click and choose INSTALL. when windows complains about protected files and bla bla bla, ignore it. select WMP10.INF , right click and choose INSTALL to finish the saga, run SETUP_WM.EXE and have fun. Sorry duds, i forgot somthing, stupid me Create new reg file and paste the following into it : Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MediaPlayer\Setup\Installed Versions] "wmp.dll"=hex:00,00,0a,00,3e,0e,00,00 "wmploc.dll"=hex:00,00,0a,00,3e,0e,00,00 "wmplayer.exe"=hex:00,00,0a,00,3e,0e,00,00 run the file and thats really all to it. sorry again