Not unless you do the method IGN.com uses. It's possible to record it, but you need a lot of hardware stuffs.
I have seen a picture of how IGN record their demo gameplay easily without relying on emulators. They made a special type of hardware that's wired (actually, plugged into Slot-1) to the internal hardware of NDS with the game card in that special hardware. Then they use some machine with 4 digital numbers (frequency) to calibrate and output the display to the computer screen via VGA ports.
I'm currently searching for the image. It's hard, but it's possible.