Step 1Click Start > Control Panel > Internet Options.
Step 2Click the "Content" tab on the top toolbar and select "Parental Controls." Click "Create a New User Account." To set parental controls and block web content, you must create a new user account.
Step 3Enter the new account name and click "Create an Account." If you are creating an account for a child, enter her name.
Step 4Select "On, Enforce Current Settings" under the Parental Controls option. Click "Block Some Websites or Content." Click "Windows Vista Web Filter."
Step 5Click the "Edit the Allow and Block List" link. Enter the website address into the space bar and click "Block." Click "OK" to close.
Step 6Restart the computer. Click the new user name icon and set the password at the log on screen. A password will now be required to access the specific websites that are blocked.