Its not really BattleFront 3. No there is not a BattleFront for the Wii. OnlyNintendo products work with Nintendo products. As well as the other systems. There is a BattleFront for DS though. It is called Star Wars: BattleFront: Elite Squadron.
StarWars Battlefront 3 is available on the Wii and on Nintendo DS. It is also available on other platforms and they include Xbox 360, PC, PlayStation Portable and PlayStation 3. The Nintendo DS can be used as a supplementary controller for the Nintendo Wii.