I have installed the 64 bit XP.After installing , i installed the audio drivers(Realtek).the drivers get installed,i cud see them in my add/remove programms.but there is no sound and the sound devices in controll panel also doesnt show the device drivers.what is the problem?one thing ,during installation,two files cudnt be copied as there was a problem in the disc.is this the reason?i forgot the file names.plz help.