How do I wire a GFCI/Switch Combo?
I found some helpful diagrams at do-it-yourself-help.com.
GFCI Protecting the Load

Wiring Ground Fault Circuit Interrupter Switch 
With this arrangement a
receptacle, switch and disposal are protected with the ground fault
breaker built into the device.

Not GFCI Protecting the Load

Wiring Ground Fault Interrupter and Light Switch 
With this
arrangement the receptacle is protected but the switch remains outside
the circuit. This arrangement can be used to control a light or other
device where the extra protection of a gfci is not necessary.