dusting for fingerprints in Apollo Justice

Hey i was wondering how you are supposed to dust for fingerprints in this game using a computer. With the ds you blow into that side thing, but how does that translate to a computer. thanks

blow into a microphone I believe.

What emulator? If you're using anything other than no$gba (and iDeaS?) using the microphone won't work. Same thing goes with the WaitBlank sleep in no$gba by minimizing and maximising the window.