new here and downlaoding ds games help!!!

I just downloaded few games but I dont know if ther is a special way to have them in my DS... I hanve a Ncard... do I just copy them on the card and it will work? Thanks for replying! (i usually speak french!)

When you download the Nintendo DS games here, they will be compressed in a RAR file. You will need to extract them using a program like WinRAR.
Here is a tutorial
https://www.romulation.org/forum/index.php?topic=3880.0

how do you extract them??
do i need to dl the WinRAR thing?

Yes. It's a shareware but you can use it as long as you want. :)

You can use 7-zip for free.

WinRAR is one of the better versions for extracting- and its free. You just right-click and extract it. Very easy, highly recommended.