Idle adjustment-howto?

The idle in my camry's a little low and i cant stand the car shaking at stoplights..so simply put how do i adjust my idle?

The idle is computer controlled.There is a bad motor mount or sensor thar is probably causing this.

Either what Joe said, or it's a vacuum problem. You might also want to check the regulator on the intake manifold and see if it's working the way it should be.