My friend is going to Aussie, NZ and Thailand for about 3 months shortly. He bought a unit called FlashTrax which has a 30gb hard drive in it. They also come with 40gb and 80gb. Together we are learning how to use it but it seems to take all camera cards (with adaptors) and will store your photo's and clear the card ready for the next set. Costs a lot of money to me but if you will take these long exotic holidays that is the price you pay. Try typing flashtrax into Google to find one.