i'm using Dell Inspiron B130 Laptop with built-in speaker and Windows XP Home Edition SP2. before my computer was infected by a virus named Worm.Win32.Netsky, i can hear the sound from both music files on computer and from websites like imeem or youtube. but after my computer was infected and coachwife6 had helped me clear the computer (Here's the link to the thread he/she had helped me) i can't hear any sound from those websites (imeem and youtube) again. even when the computer starts up or shuts down, i dont hear the signal sound like before. And also the little sound icon on the right bottom on the task bar also disappear although i've check "Place icon on the task bar" in sound properties/options. but i can still hear sound from musics files on my computer. can someone help me pls???