Hello all, new to forum and very glad that i found you! OK, i'm someone of very little technical knowledge and my daughter owns a DS lite. I've heard various things about adding cards in order to listen to mp3's, watch videos and access internet via wi-fi. This is all i know!! I've heard terms like flash cards, R4's and DTTS but it means nothing to me. Could really do with an idiot proof guide.....pretty please!! Do you buy these cards pre-loaded with the required software, or are they just converters for smaller cards? Answers in child form please!!!!!!