Take out the memory stick from the camera and in the back of the stick you will see a tiny lock slide on it. Just unlock it.
Kingston is the most recomended memory card brand.
The Sony Cybershot is the premier point and shoot line from Sony's camera division. The Cybershot excels at low light photography because of the advanced CMOS sensor it has behind the lens. If you are looking to buy a Sony Cybershot, ensure that you purchase an additional SD memory card to accompany the camera. The Cybershot series has less than 50 megabytes of internal memory, meaning that it can't hold many photographs without the addition of extra memory. The Cybershot is reasonably priced and is in direct competition with point and shoots from companies like Canon and Kodak.
You just have to press it in gently, and the memory card will pop out a bit. Just enough to pull it out.
The largest Memory Stick card you can use in your Sony Cybershot DSC P71 is 256MB http://www.mymemory.co.uk/compatible-memory/Digital_Cameras/Sony/Sony_Cybershot_DSC_P71
take the memory card out of the camera and push the little yellow lock upwards to unlock it.
Mine from Future Shop Does
Place memory stick into computer card reader follow instuction on screen
how do i put my memory card in the camera, it won't fit
It depends on the camera and the size of the memory card.
The memory card is camera specific, however the camera itself is waterproof, and that includes the SD card slot. So any card which works with the slot will work with the camera.
Memory card passwold
This is relative to your camera's settings (specifically its resolution) as well as the amount of internal memory your camera has and the size of your memory card.