R.J.
HI! I'm new here but this I can sympathize with. When my son was 3, I bought the PottyScotty doll along with the Potty training in one day program. It was fairly inexpensive and worked! We had a "big day" that revolved totally around learning to use the potty. He had a party and received a new toy. It was a big deal and he LOVED it. After that day, each time he had an accident, we "practiced" going back and forth to the potty 9 times. It sounds like a lot but it really taught him how to go-muscle memory I guess. Needless to say, we were COMPLETELY accident free within 1 week. He is 4 now and is a pro! Nighttime has always been dry too. I was amazed at the success of the program.
http://www.pottyscotty.com/
Good luck!