I'm running Windows XP on a Dell "Dimension 8400." I use DSL with Westell Model 2200 through Verizon with a Linksys router to three separate PCs. Problem: The kids are in their rooms all night on the internet when they should be sleeping. I've tried everything mechanical to stop it, but they're smart little monkeys, and always come up with work-arounds. Question: is there some form of adminstrative controls in the software that will let me block internet access each evening at a pre-set hour?