Can anyone recommend a good resort where kid's clubs start at 3 years old?

Most start at 4 that we have found.

Thanks.

You could look at most Beaches resorts - they have kids clubs for all ages. We liked the resort -food was ok. This year we are trying the Westin Our Lucaya in the Bahamas - their kids club start at 3

Check out Club Med Punta Cana (Dom. Rep.) as well as the Crowne Paradise Club in Cancun and the Gala Resort (Playacar) just south of Cancun. Also, several of the Jamaica properties might work for you: FDR, FDR Pepples.

The best kid's program I have seen for little ones is at Club Med. We went to Club Med Ixtapa and I was very impressed with the way they handled the kids - my daughter was a little older but I saw them with the babies and toddlers all the time. I really enjoyed Club Med - not luxurious but fun.