Right Click the Net Nanny Icon in the system tray and select "Disable Net Nanny". The Administrator's password is required to disable Net Nanny.

You are then given two options:
Auto re-enable in - with options of After Reboot, 10, 15, 20, 25, 30 minutes or 1 hour
Remind me in- with options of Never, 10, 15, 20, 25, 25, 30 minutes or 1 hour