Need Schematic for SI 7300 stepper modules

[Mike GeniuS]

   I'm looking for a schematic for the si 7300 ic (other than the one in the data sheet.) I'd like to use buffered pc parallel output (i got this already) to control the (3) si 7300's i have now. A quick & dirty approach to these modules (i.e., pwr, signal inputs, driven outputs, heat sink requirements, examples, anything, actually) would be super helpful.  thanx