Joe:

It's very simple, and if you order the mic capsules ($2.50 or so each) you can request a Digikey catalog which has the circuit drawn out with the mic capsule listings. Basically you want to run a single conductor shielded cable (up to around 15') from the "hot" tab on the mic and the "ground" tab (the ground tab you will see is connected to the shell of the mic capsule. Run the +9VDC through the 2k2 resistor to the "hot" lead and the -9VDC to the ground. At the junction of the resistor and the cable on the "hot" side, place the 220uf cap with the + side toward the 2k2 resistor. On the (-) side of the capacitor run the 100k resistor from there to ground. The output that goes to your soundcard is taken from across this resistor. It's much easier than it sounds! Your soundcard will need a microphone input because the microphone does not have it's own preamplifier.