How to block Guild Wars?

I`m in the need of preventing Guild Wars from running.
Let's say I have a 50-years old child and want to limit his access to Guild Wars without being able to fix things. How should i do that?
I need a solution that isn`t announced with a pop-up bubble saying - "something is not running cos".

I know i`m cruel.

Lol! Wife aggro?

I have no idea. My husband took away my modem once. He took it to work with him. I went to the store and bought another one.

Maybe give this a whirl?

http://www.netnanny.com

@Inde

Orly?

KPEATOP, this would violate the Guild War's EULA. Which we don't allow posts about.