You must format the memory card when inserted into the camera.
To that end, press the MENU button, so there is always at our camera, and then look for the position FORMAT. Best to do it with your camera's instructions and hands, because in different formatting models may require a slightly different order select items from the menu.
NOTE: Do not format the card using a computer, or when the card is inserted into specially designed for her nest. Almost all laptops have the slot.
SD card 2GB holds about 400 photos taken with camera 10MP resolution matrix (MP = megapixel). That's a lot of pictures and therefore