Heh, that's gonna be fun getting my DS to work with my WEP protected MAC filter enabled wireless router...

Anyway, yeah, it's a system with some great games. Here's a few reccomendations:

New Super Mario Bros.
Kirby Canvas Curse
Castlevania Dawn of Sorrows (it's seriously almost as good as SotN)
Pheonix Wright Ace Attourney
Trauma Center Under The Knife (this is getting re-released by Atlus soon)
Puyo Pop Fever (the childish theme may put some off, but it's rock solid under the hood)