yes, it's called No$GBA
There's also a program to launch it called No$Zoomer that will make it full screen and enable a few other features (such as a noise suppressor).
It works very well except there's a lot of noise. The noise suppressor works very well but for some reason there isn't a way to keep it on, need to hit a key to turn it on every time you load a game, and some times multiple times during games... hence my want for an alert telling people what key to hit to suppress any noise they might here during play.