The extent to which you should remain patient and await your son's indication that he is ready to master this challenge depends almost entirely on whether there is any pressing need now to push him along. If he can just as readily stay at home until he starts kindergarten next year, you needn't press the issue. In fact, it's best not to press the issue. If kindergarten in Sept. of '08 is the target, you've got plenty of time. If there is a realistic demand that he be toilet trained now, the best approach is to combine reward and, to be frank, coercion. Establish a coveted reward for accomplishment of toilet training, and on a day-to-day basis have his access to a particular enjoyment contingent on using the toilet. Now remember, I'm suggesting this only if the need to get beyond this task is urgent. As an example of what I mean, let's say your son enjoys watching
SesameSesame st. vitamins plus iron Street. You can let him know that watching
SesameSesame st. vitamins plus iron Street is contingent on his using the toilet. So, in effect, using the potty is his 'ticket' to his favored activity. This is by no means the most suitable thing to do to push children towards accomplishment of toilet training, but I am mindful of wanting to offer you a course you could pursue. Again, though, if it can wait, the slow-and-steady approach is still best.