Is your DS Lite starting to look a bit battered? Maybe the touch screen is an unresponsive mess of scratches, maybe you just dropped it down the toilet, oops. Well now you have the perfect excuse to upgrade when the Nintendo DSi is released on April 3rd. Being the third incarnation of the runaway success that is Nintendo's current handheld you might be wondering who there is left that doesn't already own a DS. This isn't just a cosmetic upgrade like the DS Lite though, the DSi is packed with new features.