Hi Girls,
Yes you do need to buy the nintendo console to use wii fit.
You then need to purchase the wiifitboard(which comes with the program disc).
I got it for the same reasons...wanting to burn the baby weight off. I have found it great so far. You can get your heartrate going with the aerobic exercises then also you can do muscle activites to tone up... the longer you spend on it the more activites and levels you can unlock.
We have heaps of fun here with the balance games...very funny to watch.. LOL

So far i've enjoyed it all.