I have a client with a Sony Vaio with XP Home. Whenever the computer starts up I get an error message the Windows cannot open the file TFTP2812. There is no program associated with this file. Also the Command prompt comes up with the SC.exe cammand info. Since this has happened, my computer freezes as soon as I click on Yahoo SBC DSL. Also, msconfig does not work and CTRL ALT DEL does not bring up the task manager. Also the PC Cillin software comes up with errors and won't start. Does anybosy have nay idea what this could be. I think it is a virus, but I don't know which one.