what hell kind of an administrator do you have, (and can I have his job?!)
to stop this tell him he should diable the alerter service,
if he won't to ensure tha you wont recieve messages just goto the run box, or dos prompt of whatever and typr
Hey presto, no more piss annoying messages.
Ping flooding is practically useless unless you get a lot of people to do it at once...
actaully a better idea is to flood them with net send messages...
write a batch file
net send [computername] "This will annoy the hell out of you"
Now run the batch file.