This is a non-resident virus which infects COM-files. It activates on every day in March, overwrites part of the hard drive and displays:
Computers must be shutdown to dedicate my sister!
A later, 698 byte variant displays:
Computers must be shutdown to dedicate my sister! -- HKs VTech --
Disinfection & Removal
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.
Description Created: Mikko Hypponen, F-Secure