Hi,

what is blocked exactly, not the name, but something else?!
This is a pure guess, but when you run command.com you bring up what an old fart like me would call a "DOS box", or command line prompt?

I think that it is this window that is blocked, which sort of makes sense, because if you let them get that far, you would have to block everything that could be invoked from it individually?

I suspect (pure guess again ) that you need to find where this window comes from? and perhaps check the registry.

Cheers