After you've installed it, run AntiBrowser and click Help then Setup Tips. It will show you how to change your browser quick-launch/desktop icon. You will also need to check or set the path to your browser exe file (the default is Firefox, and should work as-is)
Now, when you launch your browser for a 'quick session', AntiBrowser will run instead. It will display a random 12 digit code, and you have to type the code and click Run Browser to get to the life-sucking time-wasting internet. If you decide it wasn't that important after all, just click the Forget It button.