How can I completely disable my touchpad?

Or, even any fancysmancy ways to toggle with a command, or on mouse detection. I've found instructions online, but nothing more recent than 2008 and they all involve a lot of x.org tinkering. (And x.org has had some major overhauls in the last year, right?)

Thanks!

-zami

PS This applies to Karmic - does this look applicable to Lucid as well?

http://xpapad.wordpress.com/2010/01/...-karmic-koala/