Emulators and ROMs

hiyas. okok i know its been a long time since i have updated it so bear with me. ok now to intro the new segment, once again... ok, an emulator is a programme to take ROM (read-only-memory) and run it as a programme. it can play all sorts of stuff computers cant. for example it can play NDS games without having to buy the games or NDS itself. all you have to do is to download it. its really simple... my new segment has Gameboy Advance and Nintendo DS or Dual Screen (i think). i am always on the look out for more ROMs to help all of us get the great games on both emulators. well i will be on my way. THANKS TO ALL THE HOLIDAY HOMEWORK I AM HAVING... *sigh*