If you really want to get revenge without risking your job, then scrap his PERSONAL computer, not his work comp.
EDIT: Woops, i guess i should read the entire thread, or atleast the posting date of the original post before posting a comment.
I guess you should have read the fine print.;)
I wonder what version of Windows Microsoft depreciated del *.* from the terminal. In any case I shall let this thread rest in piece until somebody new answers my question which is not meant to be answered ;)