When I open xorg.conf, there is not one section that mentions "Input Device." What am I do to?

Right now, I'm using touchfreeze, which doesn't even seem to work half the time, and anyway my taskbar is getting full. I really just want something that will run at startup and keep going in the background. Is there possibly another way I can do this?

I love ubuntu, but I keep running into problems and exceptions with my system on nearly every tutorial I go through, and the problems I encounter always seem like one of the rarest kinds, so I spend hours trying to fix something that seems very simple for everyone else.

Using ubuntu 9.04 on a 64bit.