Thanks for the suggestions, here are some pics of the crawl space. It is located under my kitchen, the floor is the same grade as the outside dirt. I plan on pouring 3" of concrete over a 6mil tarp that will be sealed to the concrete surrounding. Then I will use something similar to Extruded Polystyrene Insulated Sheathing on the walls but I just want to make sure that is the bets way to do it.
The top picture is the entry to the crawl space, the next three are the left, center and right walls looking through the old window. I have already removed the older insulation and drywall that was placed on the dirt floor, it was so wet it was literally dripping water.