I just got accepted to this program. After talking with the program head, who also works at Univ. of Mississippi Med School, I learned that doing well in this program sets you up for admission to that school. The program consists of medical-level courses taught by at least one medical school professor.
I was surprised there was no info for this program on SDN. It seems like a gem considering the cost (about 12k), the fact you get a MS in one year, and that it feeds (albeit unofficially as it's a different school) into Univ. of Miss. Med School, also low in cost and not without a decent match list.
By the way, if you apply to the med school you have to be a resident of MS by the time you matriculate, so you would have to move out there sometime in July to be a resident by the 2008 matriculation date.