W97M/Gamlet is a simple Word 97 macro virus.
Disinfection & Removal
When an infected document is closed, the virus shows the following message in the Word's status bar:
TO BE OR NOT TO BE ?...
Then it infects the global template and every document that is closed thereafter.
It also disables the Word's built-in macro virus protection when Word is restarted and hooks "Tools/Macros/Macro" dialog rendering it unusable.
Technical Details: Sami Rautiainen, F-Secure