Canon Digital Camera Memory Sticks

How do I remove my SanDisk memory card for my camera?

I have a gun ELPH. http://www.itechnews.net/wp-content/uploads/2009/02/canon-powershot-sd780-is-digital-elph-camera.jpg and when I sat on my memory card san disk said it was locked. I know how to unlock it so just click the memory card remove, but it was stuck. How can I get?

Note: "Lock" means that you have the card write-protect tab in the locked position. It is a small tab at the camera. To get your card out, simply press further in until you hear / feel a slight Click, then it emerged after that. And after that, remember to unlock their mobile card small tab next.

Canon PowerShot SX10IS Test Video #2