SL400 can't disable touch pad...

[southpawOO7]

hi, i was trying to thin out some of the start up programs on my computer to help it run a little faster. so i was disabling things i "thought" i didn't need. well one of them made it so i can't disable or adjust the touch pad. i do the standard right click desktop, personalize, mouse pointers, then on that tab there are only buttons, pointer, pointer options, and hardware. before there was an "ultra-nav" tab. does anyone know how to get it back?

P.s. as an extra, is there some extra fat that i could trim as far as background programs? i mainly use my computer for internet videos and itunes. and yes i know about the temp internet files and cookies and defrag and disc clean up...