NB. The max capacity of an Std SD card is 2GB, so if this device supports 4GB cards then it must be SDHC capable.

Rather than bin/not use cards that initially appear not to work on a device give this prog a try as it is specifically written for formatting SD/SDHC cards. It made one of my non compatible (with Linux on my Q7) SDHC cards work again after several failed attempts using the Std Windows formatter.
http://panasonic.jp/support/global/c...formatter.html