Nokia 6275i

Hi everyone, I recently bought this phone (Nokia 6275i) and then a Kingston 2gb Micro SD card to go with it. I can save pictures onto the card within the phone but when I put the card into the SD card reader in my HP Laptop the card is shown empty. Drive properties show used space and free space so it shows there is data on the card but it just doesn't show the files in Windows explorer. btw I'm running XP service pack 2 - got all the updates and still no luck. Anyone had this problem? Maybe you can help me out...... Much appreciated.