A few DS owners asked me if it's safe to go online/wifi on a flash cart. Another quaston, is it even possible to go online using an emulator on a PC?
You can't go online with an emulator. I have spent countless hours looking stuff up on it, so don't waste your time. You can go online with a rom and a flashcart, but ensure that the game has been release. This is because it is kinda suspicious when you are playing Scribblenauts, 2 weeks early or Pokemon 3/4 days before it's release.