Select one of the ROMs from your list and double click on it.

ENGADGET: How to set up your Raspberry Pi to play Atari 2600 games

And how many times did you double-click on it?

CNN: ASIANOW - TIME Asia | Asia Buzz: Online Advertising

Apple says they've figured out how to implement third party multitasking without hurting performance or battery life, and they're demoing it now -- you just double click the home button and see a list of your apps, and you can just tap to switch between apps.

ENGADGET: Multitasking comes to iPhone OS 4.0 -- but not to the iPhone 3G