Wii Parental Control (WPC) was created to let parents decide when and for how long their children can use the computer/internet. Once you install the software, you may create a profile for each user and specifies them when and for how long they can use the system. Whenever a child tries to log on, he has to enter a password. WPC then checks to see if that user is allowed to use the computer or internet at that time. If they are, they gain access as usual. WPC also monitors how long they have been on. When their time to access computer is up, it logs them off and they can't get back in until the next specified time. If their online's time is up, WPC cuts off their internet connection and blocks all access to internet.
And if your child tries to log on at an unapproved time? Then even if they enter their correct password, WPC still lock them into login screen. This means that they can only turn off computer until their next approved time comes up.
WPC's easy to use interface makes installing the program and creating the user profiles a breeze. Check out the "Screen Shots" or "Quick Start" section for know more about the software.