Game Help! (DS Emulator)

when i play certain Roms with my NO$GBA emulator i come to a point were i need to "blow" on the screen or "speak" which obviously does not work on a computer screen. is there a way that i can somehow be able to do this? what can i do?

You need a microphone for "blowing" and "speaking".

There's a method posted on the Ngemu forums which allows you to use Window's Microsoft Sam to emulate the microphone function alternatively. You'll have to search for it yourself I'm afraid.