Welcome to Flyertalk.
As a first recommendation, I suggest that you try searching for some existing threads. There are quite a few discussions on the forum where you can find recommendations for a trip to Hakone, like this one:
http://www.flyertalk.com/forum/japan...-day-trip.html

In addition, Wikitravel is a great resource:
http://wikitravel.org/en/Hakone

If you find your questions unanswered by those sources, I suggest appending specific questions to the most recent, relevant threads. (And if there's no relevant thread, then it's fine to start a new one).

Have a good trip.