How can I vary an Ultrasonic Mist Maker vibration using a soundcard tia sal2

Greetings All

I would like to vary an ultrasonic mist maker like this one
http://www.physlink.com//estore/cart/UltrasonicMistMaker.cfm
using my audio sound card.

Example:
I want to produce complex waves using my sound card 4000Hz square wave
combined with some 1000 hz sine waves etc.. I would like to be able
to vibrate the ultrasonic mist maker transducer at this rate. Is this
possible?

I can create the audio waves easily but I'm not sure how to drive/control
the vibration of...

How can I vary an Ultrasonic Mist Maker vibration using a soundcard tia sal2