Ummmm, no offence to LLL2, but if I can save one piece of pork from being plunged into a boiling pot, my life has been worthwhile.
Real barbecue is about LOW heat, SLOW cooling, LONG cooking times. A boston butt will take about 14 hours (give or take) on a smoker at about 225. A long time ago (when I was still a beginner) I posted a topic on "how to set up a slow cooker" if that's still in the archives, check that out. Oh, and if the most flavorful thing on your cooker is the sauce, you're doing something wrong. ***edit Found the original post I made
http://www.tfproject.org/tfp/showthread.php?t=6015 ***
I try not to come off sounding loke a BBQ snob, but once you've "done it right" you'll never go back.