FFB2, in XP, with it's original driver, you can set feedback force and center force in 4 level, you can also set some force reaction for different key on the stick.
But this driver DOESN`T work since Vista, it even can`t install in Vista, and I think it would be same in Win 7 (I havn`t tried to install the XP driver in win7).
just like above reply, Vista and Win7 both have a default driver for MS sticks, including FFB2, P2(precion 2). you can use the stick without installing the original driver(which comes with the stick and only works in XP) , and the funtion of feedback force tuning GONE.
the keys, hat, and throttle , axis , all works fine in WIN7+FSX.