I agree with Jeekinz about the low and slow. 225-250 degrees.
I cook spareribs using the 3-2-1 method, back ribs using 2-2-1, either indirect or on the smoker.
Cook 3 hours, basting (my favorite is apple juice) every 30 minutes to 1 hour.
Wrap in foil tightly - give it a good basting before...