Yup. The first step will be to setup restricted user accounts for your kids. This way you can...............................wait a minute. This was just homework for me 2 weeks ago. Copying and pasting:
Configuring and Troubleshooting Parental Controls:
-User Accounts: In order to use Parental Controls, the parent must set up his or her own Windows Vista user account, and then set up accounts for those that will have Parental Controls enabled. Be sure to develop habits for logging off accounts when not in use, as well as using passwords.
-Setting Up Parental Controls: Click Start > Control Panel > User Accounts and Family Safety > Parental Controls. Select the account for which you want to apply Parental Controls. Choose on or off to enforce the settings.
-Web filter: This can be used to restrict Internet access to certain Websites.
What if a site that I consider acceptable is being blocked?
On the same page as above, click Windows Vista Web Filter. You will have a choice for blocking some Websites or content, creating a list of Websites to block or allow, blocking content according to ratings, or blocking Internet file downloads.
-Time limits: In that same Parental Controls window, click Time Limits. This will take you to a calendar style grid where you may choose a time to grant the user Windows login access.
-Games: In that same Parental Controls window, click Games. This will then give you choices to specify whether the user can play games, allow and block games according to ratings, or create a list of games to be allowed or blocked.
-Allow and Block Specific programs: Choosing Allow and block specific programs allows you to make a list of which programs the user is permitted to run.