John - another good site, similar to this, is the Fodor's website - go to their travel boards for Europe, Italy. I got LOTS of great advice from them, samples of what other's itineraries looked like, etc.
We were in Sicily for 7 nights a few years ago. Our itin was:
Flew into Palermo, 2 nights at Hotel Principe de Villafranca - walked around on our own (must have had some guidebook but can't remember which one exactly). Don't skip Monreale - it was fabulous
Hired a drive to take us to Corleone where my family is from, just for the day. He drove us back to Palermo where we picked up our rental car.
Drove to Trapani (near Marsala), 2 nights at Baglio Spano - used this as our base to see Erice, Selinunte and Segestra.
Drove to Stazzo (near Acireale - half way between Taormina and Catania), 3 nights at Palazzo Giovanni - our favorite B&B. Used this as the base for day trip to Siracusa, day trip to Mt. Etna, dinner in Taormina.
Loved Sicily - SO interesting, great food, nice people, wonderful Greek ruins, very different from the rest of Italy that we have seen!