Basically there is no difference. But there are some.
DS Lite Pros and Cons
Pros
Both screens are brighter than the original DS, with more options.
It is a lot lighter than the original DS, and looks nicer.
The Stylus is thicker, making it easier to use. It's in a better spot than on the original DS.
Cons
The DS Lite is a lot weaker than the original DS, one drop could cause a crack in the corners and could possibly make the top screen fall off.
The DS Lite still has a GBA slot but any GBA cartridge you put in there will stick out a little bit.
27/03/2008
Legend of Zelda: Phantom Hourglass, The
ICC's Cage