What you are asking for is emulation. Emulation is the porting of a console game to a computer, and is illegal if you do not own a copy of the game yourself. Anyways, if you play Mario Kart: Double Dash on your computer you cannot use any multiplayer functionality.
1. Go to Mario Kart Chanel and click on 'Rankings'
Well, if you can find the games: Luigi's Mansion, Super Mario Sunshine, Mario Kart Double Dash, Super Smash Bros. Melee, Mario Party...6 I think, and Super Monkey Ball. Driven is also a decent game, if you care to find it. And there are other great games that i don't know of I'm sure.
There is a Mario cheat book available for every console. In that book one can find hints and cheats for every Mario game including the Mario Kart for DS.
Unfortunately, Diddy Kong is not one of the characters in Mario Kart 7 =(
to do your best and find shortcuts
Find it at any game store
You will have to find out from your local store!
If you go to http://uk.ign.com/cheats/games/mario-kart-64-n64-502 you will find all the cheats!
there really is no cheats to find something but you could use Saint Anthony. ( Oh saint anthony, something must be found. please help me find my mario kart game)
You might be able to get the game. I don't know. Try buying Mario Kart Wii to find out. Sorry that I couldn't answer your question.
sorry to disappoint you, but, you are talking about an icon you can only find on Mario kart ds.