Q: How rotate 90 degrees magic trackpad coordinates

Hi Guys,

I'd like to rotate 90 degrees my track pad coordinates so that it is more ergonomic: highest end of the track pad to the left (instead of at the top), since I'm right handed.

This might sound picky, put I feel that it would be so much better.

I saw this http://hints.macworld.com/article.php?story=20101029060726179

but I don't get it. I rest my fingers on the magic trackpad but I get no change...

Thanks,
Sam