OK, just got back from Radio Shack trying to get the right components. The transistors were hard to match up, so I got a couple.
One is a MOSFET N-channel transistor and the other is a bag of NPN-Type transistors. I've included pictures below. My guess is the MOSFET is the closest match and where I am starting to build the circuit.
Am I correct in assuming the following:
Source - The +5V/82ohm/LED side of Ether's diagram
Drain - The ground side of the diagram
Gate - The DIO Signal/100Kohm side of the diagram
Here are the components I purchased, 100K-ohm resistors, MOSFET transistor, and NPN transistors
And the back of the MOSFET transistor and NPN transistor bag
