Richard, be forewarned that a good complex brown mole (which I assume is what you're after) can entail assembling an amazing number of ingredients. The good news is that mole is not that particular, you can substitute or omit freely depending on what's available in your area. The recipe I've used would require too much typing but I'd expect any reasonably authentic recipe in addition to the expected tomatoes to include whole dried peppers, seeds/nuts, probably raisins, maybe plantain, a crumbled corn tortilla or two. And chocolate - Mexican, of course! The cooking school Ramekins, in downtown Sonoma, has a web page devoted to mole. Check it out at
http://www.ramekins.com/mole/recipesmole.html. Any of the first three: Mole Sauce, Mole Poblano #1 or Mole Poblano #2 would do the trick, I think. Failing that, the stuff in the jar in your grocery store Mexican section works