Potty training help. please

Does he go around a particular time of day? I gave my son 5 m&ms each time he had a bm in the potty. He was all about getting the m&ms and was trained in like 3 days, we gradually phased out the m&ms.
When he goes in his diaper/underwear, take it and dump it in the potty to show him that's where it goes. Don't get mad, but reinforce that he needs to go in the potty now that he's a big boy. Does he have a favorite toy? You could also use that and tell him that when he goes in the potty he can play with that toy for 15 minutes or whatever time limit. If he goes in his underwear, he doesn't get to play with it.

I had a simliar issue with my son and I just had to be really vigilant about getting him on the potty regularly. And when he did ake it to the toilet we made a really big deal out of it, Hubby and I would dance and clap for him and tell him how happy and proud we were of him. He loved it. Now he is always very pleased to show us how well he did. You just gotta be patient, he's still only 3.