What I do is... I put my card in the computer, Click on the start button, then click on MY COMPUTER, Right click on whatever removable disk your card is in, A window will pop up then click on FORMAT, another window will pop up, under FILE SYSTEMS change it to FAT,and click start,, a warning will pop up about erasing all the data, click ok,, In a couple of seconds it will say Format complete. That is how I do it, and it works fine in my camera, I also take my digital camera with me to look at the picture's in the timber. I hope this helps.....