Newbie. Help needed.

Hi,

just bought a brand new nintendo ds,

been reading forum but there is alot of information and i dont know what is best.

i want to be able to play nintendo ds games such as mario cart and mario at olympics.

please can you let me know what is the best hardware i need and where is the best place to buy it.

i am after the product that is best value for money and not too expensive.

Thanks in advance.