Ok. So I think I've made some progress. I took a gamble and went with the wiring scheme from this thread (http://www.cnczone.com/forums/showthread.php?t=53063 (Erratic motor behavior)), and in wiring it up, the motor spins. But it spins once the driver board is powered up; it doesn't seem to react to the software (kcam4 - trial).
The driver board has a printer port, but I'm using a parallel-to-usb adapter. Does anybody know if doing so causes any problems? I assumed that winXP's drive database would handle it just fine, but without a true printer cable, I have no way of testing.