Well, Im no expert or nothing, but I train my dog for tracking game, and if that is what you mean by scent training I wrote a description in the thread "shorthaired german pointer question". But thats just how I do and I recommend that you get a book on the subject or, even better contact someone who train himself.
One member on the forum, wildlands, breeds expert tracker dogs, and has a home page.

Maybe I misunderstood you completely and if so Im sorry!