i don't think so
no
you probably could.. but it wouldn't be free.
It depends on what your style is. If you already have a DS or DS Lite but no iPod, go for the iPod Touch. If you already have an iPod but no DS or DS Lite, then go for the DSi.
Yes you can OR you can trade your Nintendo DS, $100 and 2 unwanted games for a Nintendo DSi.
If you mean simply trading one system for the other, then no, you cannot. The Nintendo DSi is worth about $150 while the DS Lite is worth about $110. You can, however, trade in the Nintendo DS Lite and cash for the Nintendo DSi. If you choose that method, you will need about $40 or so more to cover the cost. You can also choose to trade in your Nintendo DS Lite plus a game or two for the Nintendo DSi.
pizzazz touch lite
no you cant dsi is to new
The lower screen is a touch sensitive screen.
While you can't trade an older system for a newer one, you can certainly trade a DS/DS Lite in for credit at GameStop or stores like it.
EB Games or Gamestop.
You can't save in the lite version of the game
One is the touch screen.