thilakshan why did you open another thread (and other two forums as well) for this? since I already replied you. It's not problem to do it,but it takes time to sweep like more than 3000 registry entries each one, one by one to remove/edit what is necessary so that KMplayer would be associated as default player for nearly 40 associations + DVD,AUDIO,AUDIO CD,... like I posted on screenshot in my previous post mentioned above. People have other obligations too other than jumping ASAP as other people would wont them to do. Please be patient and level headed when asking and opening another threads.