http://www.modchipstore.com - The R4 DS Card is a homebrew cartridge for the Nintendo DS and DSi console. It provides users with a way to load and run thousands of homebrew applications and games, all download-able free online on various websites. ColorsDS is probably the BEST painting program for the Nintendo DS and DSi, allowing artist to take their painting and put it into digital form right on their Nintendo DS or DSi systems.