How to: Take a screenshot on an iPhone/iPad/iPod Touch 2g 3g

Iphone/ipad/ipod already had built in screenshot functionality, soo you don't need to download aplication. Just follow this steps :

Ipod 2g

1. Press HOME and LOCK/POWER button in the same time. you will hear camera sound, and screen fading for split second.
2. check your photos - saved photos  you’ll see your screenshot automatically saved, or check camera roll/photostreams. 
3. Try press POWER/LOCK first then HOME if not work.