Can I rotate my screen 90 degrees?

Greetings!

Just got my first Mac, a second hand MBP13 2010 and am very happy with it. However, I'm looking for a way to rotate the built in screen 90 degrees (for lazy web browsing, half asleep on the side...). So far I have only found info on how to do this on external monitors and with a ATI graphics card (the MBP 13 2010 has Nvidia 320m).

Is there some unofficial hack or other way to enable this feature?

Thanks!

 

Thanks, legreve, that's a very nice app! It is close to what I am looking for. This app turns the screen orientation when you flip over your Mac. I suppose the computer has motion sensors built in. Very cool! However, I want to tilt the screen while the computer is left as is.

The search goes on