What I did is pretty work intensive, but it does work if you are consistent: I would let my dogs out constantly in the beginning. Whenever they would "go" in the right place, I would IMMEDIATELY (as in right when it happened, so that they know what to associate the treat with) give a tasty doggie yogurt drop treat, and praise a whole bunch. After a while, they want to go out to use the potty, because they associate good feelings w/it.
I'm also a big fan of Ceasar - watched all his shows on DVD... a lot of issues are dealt with on his show. The thing is that it takes consistency and effort, because you are not only changing the dog's patterns, but one's own patterns.