I really want the wii board. Do I have to buy the wii fit plus to get it?

How many wii fit boards can be used at once with wii fit plus? In the multiplayer mode of the new wii fit plus can you use more than 1 wii fit board at once?

My kids are 5 and 6 years old, and when they play on the Wii Fit Plus, it does not save their scores (if they place in the top ten). I thought we would just tell the Wii that they are older. How old do I need to tell it that they are? At what age does it allow them to earn "fit credits" and start saving those scores as it does for us adults?

I’m planning to buy the wii fit plus to help me loose weight,i’ll like to know which wii fit games included makes you loose weight and makes you sweat.

Thank you for all answers.

ive seen tons of different information, but i havent seen the info i want. If i buy wii fit plus, does it have all of the games that wii fit had plus some, or does it only have its own games?

So what is the difference between the wii fit plus & the wii fit plus with starter kit?

I want to know before I waste money on the wii fit plus version. Please help.