hey guys. I was recently trying to setup my sd card for gateway but apparently my 4gb sdhc card wont appear at all on my computer. im trying to connect it through a card reader but nothing is happening. my other 2gb sd cards connect fine (are being used for other purposes). I also tried to format the sd card on my 3ds in which I lost my swapnote data and mii data. I there anyway i can redownload the swapnote data or something and get my 4gb sdcard to work or do i just need to get a new card reader?