I also have a D40 and I have recently took up photography. I wanted to get a underwater casing for the d40 to bring on holidays to get some underwater shots. I bought a D40 case from Ebay in October. Although it was from the USA it was very quick to arrive. I tested the case with kitchen roll (i know very professional-lol) and the case was absolutly waterproof. Its pretty fiddley at first but after a few test shots it does what its supposed to. I tried it in chlorine and salt water and it fab.