are there any card readers that i can plug into my computer and put a ds game in it and take the information off a ds game?
I have the Gameshark DS Gamesaves device. Unfortunately it does not seem to work under Windows Vista. I am getting the Cyclo DS and the EZ 3in1 Flash Plus -- you need both to get your save game (not an elegant solution, but). I got mine from dealwoot dot com. You'll also need a memory card. I got one on OKorder.
you can either use a micro sd card reader or a micro sd card adapter, which slides into a regular sd slot on a computer.