if you dont have MESHCAM, and if you don't mind saving your cad output as stl - stereolithography -- then use STLWORK from IMSERV. It does slabbing - just select it and its done automatically and generates the gcode. Was pretty economical as I recall.
Not with the company - just like the gear.
cheers - JIM
Experience is the BEST Teacher. Is that why it usually arrives in a shower of sparks, flash of light, loud bang, a cloud of smoke, AND -- a BILL to pay? You usually get it -- just after you need it.