Hi Dennis,
Taking a stab at anwering your question, and also giving your post a lil' bump to see if you can get more input from others....
Lamb ribs are super fatty, and have caused me lots of trouble with flare-ups when cooked on the grill. To get around this problem I've used the technique where you boil or braise them until tender, then put a wet rub or sauce on them and grill them to give them a bit of a sear. I've also made them where you marinate them, then cook them covered in the oven until almost tender, uncover and baste and let them tighten up and brown in the oven (or could finish on the grill). They don't take as long to cook as pork ribs, more on the order of 2 hours instead of the 5-6 that pork ribs take.
As for rubs and flavors, lamb stands up to a lot of different flavors, your favorite rub would probably work fine. Lamb works really well with flavors like garlic, lemon, rosemary, thyme, red wine vinegar. I think a mellow smoke like oak or fruit woods work best....I've used orange wood before just for fun, and it came out really good.
Good luck, and hope it comes out well for you!
Clarissa