Hey guys, there's a couple of good Snes Emulators out there, Zsnesw and Snes9xw, but neither of them are able to exit when escape is pressed. So with my few minutes of Hex editing experience I was able to manually change the key in Zsnesw! For anyone who wants it here's the link:
Zsnesw 1.36 (latest version)
http://lsnake.hypermart.net/zsnesw.snesCheers!
EDIT- Sorry but Hypermart won't let me upload zip files, so I gave it a .snes extension. You will have to rename it back to zsnesw.ZIP after you download it.