u just load up the roms and it plays. then u just use the controls on the keyboard its not very hard. haha jokes, so the microphone is the actual microphone on ur pc.
u click on the NO$GBA or u can click on the zoom one but all that does is just increases the size of the screen. the sound on the emulators don't seem to work very well when im using it but not that bothered i just mute it. but the games work fine.
u prob can't but u can't complain if its free and with multiplayer u need others to have a ds anyway who are with u.
no you cant, that makes it crap imo, single player is booring. anybody got a legit DS and the latest advance warz, pm me ur code and ill own you.