OK, so I know I'm a little behind the times on this, but I just got Mario Kart DS. Seeing as how I don't have the instruction booklet, how do I get the friend code? And if anyone else has it, please post your code, so we can get some games going.
It's been quite a while since I played it, but I believe your own unique friend code isn't created until the first time you connect the game to the Wi-Fi connection for the first time.