Using an LM339 IC as a motor driver I have an LM339 IC from Radioshack that I am hoping to use as a motor driver.
I read many resources on how the L239D can be used as one.  I don't have enough circuit experience to truly know the difference between the two and googling shows many wiki pages I couldn't fully understand.
Can the LM339 be used as a motor driver?
I did a quick comparison of the two circuits here LM339  and L239D
But I am still unsure.  I don't want to fry my board so I am asking first.
The LM339 is a comparator, not a motor driver. The L239D is a dual H-bridge motor driver.

They are completely different things. One is used for comparing two voltages (up to 4 times, it's a "quad"), the other is used for driving motors.

The LM339 can output an absolute maximum of 20mA. That's half what the Arduino itself can output on an IO pin!

You could use the LM339 as part of the control circuitry to control a H-bridge, but it cannot itself drive a motor in any way, shape, or form.