You can download them, or make your own.
They're actually called themes.
The must trusted and reliable website I know to get themes for the NDS,
Is www.ndsthemes.com
At the top, (the menu bar), click on R4DS/M3DS, and you'll see a bunch of themes there.
Then, just download them, and save them to your R4 in the -system- folder.
(In the system folder, you need a make/go to your "THEMES" folder, make a NEW folder inside it called "THEME01" if this is your first theme, and then save the theme you just downloaded in it. Once you've done that, just put the R4 in your NDS, turn it on, and hit Select and then A. Your theme will become the new background)
Hkorz has loads of games and is really simple.
you can download from Romulation.com
Yes, that is what the R4 is made to do.
no
homebrew
you can't its illegal!
no thiere is'nt you have to download them in a microcard that fits into the R4 card
This is an easy one. Go to the r4 site and download the latest kernel under the download section. Put all that on your microSD the plug it into the DS.
Yes it is o_o
An R4 is used to store DS games you download off the Internet so you don't have to buy DS games anymore you just download them
Games-engine or hkorz
An R4 is basically a mod chip for the Nintendo DS console. You can download games from the internet and put them on your R4 card and play the games on your Nintendo DS.