hi,these ques might be a silly.. but i want to know in depth.. 1) why do v refresh the system..? i dont mean the browsers which provide Refresh button to reload the page.. normally when one starts d system he would <bold>(Right Click->Refresh)</bold> refresh the desktop few times.. does this actually serve any purpose..?? 2)i dont wish to waste a new thread,so posting it here.. also What is d purpose of registry(it would look funny)..?? i know it can do lot of editing stuffs that can change customize the appearance of windows.. but y cant that be provide inside some folders(like Pgm files etc) which can be directly accessed to do d editing works.. When OS like Linux , Unix etc dont ave registry y does windows need registry..?? why cant they develop an OS (like linux) which doesnt ave registry..??