Is anyone got a suggestion for an inexpensive, possibly even a "add-your own hdd" device that can read SDHC cards and copy the contents of said card on to a HDD in the field? I'm looking for a solution that could take either a 500GB 2.5inch laptop drive or a 1-2GB 3.5 inch sata hdd. I have seen a few photo oriented devices but they are expensive and usualy have smallish (120GB) internal drives. I know a laptop is the preferred solution, but I am trying to travel light and would prefer to invest in something like this rather than another half dozen SD cards since I have hdd coming out my you know what...