The screen shot I used was from a Group Policy which is applied to the entire domain. If you're not sure how to set a GP on the domain, I need to dig you up a link for some good basic Windows Domain info, since I'm sure that'd explain it better than I could. I'll see what I can find tomorrow, I'm just off to bed at the moment.

Edit: What's another minute or two? Here's a link from the good folks at MIT.

-Zeke