I have a kingston 8gb SDHC card. I tried using two different card reader on my window XP PC. The first card reader comes with the acekard 2.1 that I bought. It gave me an error that the disk is not formatted but when I try to format it, it says that it cannot be formatted. For the the other card reader, I don't even see the drive in the my computer folder. What is wrong? Or is my sdhc card really spoil?