Since last update for HTC Desire HD  to Android 2.3.5  – HTC Sense 3.0 seem like we got natural way hassle free to take a picture of our phones screen. No need to root or third party application, no need for complicated procedures  just follow this key combination, is easy:

• hold POWER button
• tap  on HOME button (if you wait too long before pressing the HOME button, normally the Power Options window appears. So, the HOME button must be pressed within 2 seconds)