I cannot get Firefox to open and now I have a box - like a Spyware S&D Tea timer registry change warning, but with no text displayed. It will not close. I am having problems un-installing Realplayer & noted that Firefox worked when I removed Realplayer temporarily. I have run Spyware S&D, AdAware, F-Secure Black light with no alerts. When I ran A-Squared it found a Heuristic.Dialer.RAS in Dell Support center\HWDiag\bin\pcmodem.p5x I selected quarantine, but now cannot see it in the quarantine. I have read the "Is your system infected?" guide. Do I need to follow the instructions & post a HiJack this? I suspect that once i have rid of realplayer these problems will be resolved.