To successfully clean any memory-resident virus, it is always advisable to boot your system with a clean boot disk. A clean boot disk is made on a system that is NOT infected, or else it is likely that the virus will infect your boot disk, defeating the purpose. To obtain a clean boot disk, you should either use one that you created when your system was first installed (and hopefully virus-free) or you may have to get one made for you by a friend with a clean system or from a computer store.
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Virus Prevention Tip: Scan and clean viruses via the Web
Virus Prevention Tip: Cleaning out a virus infection
Ask the Expert: Maintaining security after cleaning an infected system