how to stop debug ?

hello all, Could any tell me how to get rid of the ‘debug’ in my pc.? I am using win2000, winword2000 and only have one hardisk C:
debug is located in the first catagory of C: side by side with ‘proggrammes, common files’, etc. It is iconised as a ‘notepad’file and self-growing whenever I open my winword till it fully occupies all sprare space. I delete it, it keeps coming back.
How can I stop it ?