ok, on my mom's computer, she keeps getting viruses. she uses sbc yahoo online protection anti virus or w/e. everytime we go to do something on the computer sbc anti pops up and says it blocked either SillyDiku or Bettlnet. her internet always freezes up, computer has shut down with the blue screen like 8 times recently, when she runs ad-aware she claims it shuts down with the blue screen right before its done. i ran ad-aware and it didnt shut down but it also didn't fix the virus problem because we ran sbc anti virus also and that didnt get rid of the virus either. can someone tell me how to fix this.