Here are the steps about how to capture a screenshot on your Android phone. Please note that it is for Windows user only.

1. Install the Android SDK

2. Enable the USB Debugging on your Android phone
   – Settings > Applications > Development

3. Connect the phone to the computer using the USB cable

4. Install the ADB driver which is located at /android-sdk/usb_driver

5. Start the Dalvik Debug Monitor – /android-sdk/tools/ddms.bat

6. You should be able to find your phone listed in the monitor

7. Select your phone

8. Click Device > Screen Capture or Ctrl + s

9. Your screen is captured and u can save it as a .png

Done =)