Final Fantasy III guide at IGN.

"The Nintendo DS is the perfect little handheld for RPGs such as Final Fantasy III. Old-school, yet newly renovated, Final Fantasy III is seeing its very first release in the United States, and is in fact the last game in the numbered series to have been released here. The DS acts as an old-school portal from which gamers can go back in time to enjoy a game that they have never enjoyed before in remade, but still traditional, form. Within is layer after layer of gameplay that makes Final Fantasy III an extremely dynamic and enjoyable RPG. When taken into consideration that this is a renewed incarnation of a game that originally saw release in Japan in the spring of 1990, you'll no doubt be impressed with your gaming experience."

Full Source: IGN