help with .nes games

i go to Romulation to get old nes games,and when i download them they come out in .nes . how to i convert them to .nds?

What the?? Of course they're .nes and you can't convert them to .nds, that would be stupid. If you're using a flashcart, download nesds or something and if you want to play it on your computer, use Nestopia etc.

im sorry, i mean on my ds lite. the folder comes up,but there are no games

Did you load the program up first? You will need to do that :-\

i have nesds and when i make a folder,it shows up.i have r4...all my ds games work,just cant figure out why the nes games dont.

Try Midori or RetroBox or NesterDS. And of course DS games work, it's a DS flashcart. Can you load up nesds?