File type association in Windows XP is very easy and Pretty Straight forward. But in Windows vista To Associate it requires steps. In Vista there is a "DEFAULT PROGRAMS" Which controls which application to be opened by which program. There is a new API for that in Windows Vista. You may Have to perform Registry Entries to Perform Those. There are a couple of things you should do, before you can fully associate or control the association of KMPlayer in Vista. FIRST In Vista, Right Click on KMPlayer Icon and Run as Administrator Right Click on KMP and Go to Preferences and In preferences go to Association Click on Defaults to load the Icons. Then Select on the files you wish to associate or Select All Files . The Screenshot After Association... Reason to Run as Administrator on Vista : KMPlayer has to store the file Association Details in Windows Registry (HKEY_CLASSES_ROOT) which has access only when accessed as administrator....
----------------- Share Your Knowledge.