Carbon, I think you've got the wrong end of the stick.
What gjohnston is saying is that they can only disable the USB mouse, not the laptop's touchpad, I think.
gjohnston, that's not a good way to disable the laptop pad anyway, because you may well need to use it some day. Look for any options under Control Panel/Mouse or Synaptics that let you disable the mouse. Unfortunately this feature is not available on all laptops.
If you can't find it, please post the full make/model number of the laptop and we'll try and help you find out how to do it.
Welcome to the forums.