If your computer is connected to a domain, Parental Controls aren't available.
You can choose which ratings systems Parental Controls uses to control games. For more information about game ratings, see Game ratings and content descriptors: frequently asked questions.
Open Parental Controls by clicking the Start button , clicking Control Panel, and then, under User Accounts and Family Safety, clicking Set up parental controls for any user.
If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Click Game Rating Systems in the left pane.
In the list of ratings systems, click the ratings system you want to use, and then click OK.