I think that you need a portable storage ( 40-80GB hard-drive equipped with AA batteries ) . EPSON P2000 is one similar example, but quite expensive. There're many X-drive ( portable storage ) around. The latest model I just saw can load 1GB memory card in 2 minutes and reload upto 50GB before the batteries get drained out. Check out the nearby digital camera shop. Good luck.
I am traveling and looking for a temporary storage option. I love to take a ton of photos and usually just bring my laptop with me to download the photos but I am tired of lugging the laptop with me. Is there an option/devise that allows me to download my photos? Something smaller than a laptop but bigger than a 1GB card? I don't want to carry a bunch of cards with me.