Shane did a great job explaining VA options but keep in mind that in Idaho we also have a great "housing agency" called Idaho Housing and Finance Association. Many people don't realize they are not just for first time home buyer's anymore. They even do loans and sell them to VA and they keep the servicing. Their rates are great and you get to deal with real people here in Idaho, not processing centers in some other state or country.
I don't personally sell homes in Idaho Falls, but would be glad to point you to an agent after I lean more about what type of agent you prefer (i.e. how high tech, how many years experience, any niche requirements (horse property, etc.)