So just got my first wii and have some questions, had to order it online since every store in the area has been out of stock since jan. should be here this friday. Whats the difference between the sensor bar that comes with it and the larger ones they sell, i was told i should by a larger one is this right? I was told i also need a wii motion thing for each remote(bringing it up to like $80 for a full remote set) is this right? I was also told i needed a sd memory card, but i thought the wii had internal memory? Thanks for the help.