Help reinstalling trackpad drivers

So I've had this issue for a while now which is the Keyboard and Mouse menu either never loads or I have to click Show All and then it loads like this:


I've diagnosed the computer it would appear that my issue arises because I installed OS X from the a Leopard Install DVD instead of my restore DVDs so the computer is using the non-multitouch touchpad drivers, so things are displaying wrong; if I install a new Leopard system I would have all my issues fixed. Now my issue is how do I replace the current drivers with the correct ones on my Restore DVD. I know I can do an Archive and Install, but is there another way?

Thanks!