There is no possible way of playing Mario Kart on a computer!
Try using a system emulator.
There is no Mario Kart 7 demo that you can play on the Nintendo eShop
There is no place on the internet to play Mario kart. It is only for the DS or DSi
There is no Mario Kart 7 demo that you can play on the Nintendo eShop
Play a Mario Kart game that has the track Yoshi Valley in it, or build your own Mario Kart
There Is Not A Demo Version Of Mario Kart, You Just Have To play it yourself
Mario Kart Wii is from Nintendo and not Playstation so no.
You need a copy of Super Mario Galaxy 1. Play it for a while ,then Play Mario Kart then it will say you have a gift From Super Mario Galaxy. then it will say you can play as Rosalina.
No
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 Wii on your computer you cannot use any Wi-Fi functionality. Do not ask about illegal activities on Answers.com.
There is no 300cc cup on Mario Kart Wii.
No, Mario Kart 7 can only be played on the Nintendo 3DS