you cant
Complete the cups...
Keep playing!
They are the bottom row of cups in the track selection. They were tracks from past Mario Kart games. They are labeled with 2-4 letter abbreviations like.... SNES - Super Nintendo Entertainment System N64 - Nintendo 64 GCN - Nintendo Gamecube DS - Nintendo DS GBA - Gameboy Advance
They Are Exactly the same cups in the same order as Mario Karts DS
Yes there is Mario kart for ds. It is called Mario Kart DS. You should buy it immediately.
On Mario Kart Wii unlock all the cups and do all the time trials. You'll get Toadette. And Mario Kart DS? I have no idea why this is, but you can't get her! Good luck!
Get gold trophies in all cups.
you have to win trophies on the grand prix cups
To get characters, you must win cups.
Mario Kart DS happened in 2005.
You cannot unlock Baby Mario in Mario Kart DS. He is only in Mario kart: Double Dash!!! and Mario Kart Wii.
come first in all 150cc cups