Hey everybody, I first want to say thanks for your product reviews and comments which helped me decide which DS Flash cart was the best and which one best suited my needs. I really dig the M3, and use it often. Secondly, I was curious as to whether there are any adaptors or other options for charging the DS or playing it when its internal battery is flat. I know there's the car adaptor, but I go on long train rides and this is kind of impractical. I've seen chargers for MP3 players and cell phones that use adaptors powered by disposable AA or AAA batteries, so are there any options like this for the DS? I've searched around but haven't had any luck. Any insight is greatly appreciated. Thanks!