You take them in-game, then it'll ask you if you want upload to the Forza Website, once its uploaded you can save them to your computer and upload to host.
I'll never agree with that, even if in Michigan all cars have hot topless girls with huge tits that gyrate, hypnotically, permi-mounted onto the hood.
On second thought thats the only thing that would make me agree with that.
I'm loving the wheel. I actually wish there was a force "wheel only" option when racing online. I do think the controller is an advantage just because their is no work involved (other than thumb work) to control the vehicle. Still I prefer the wheel in every way.
http://i84.photobucket.com/albums/k21/sol740/Z5.jpg