http://faq.gp32emu.com/
this board right here is great as well.
some more useful newbie info: btw keep in mind my GP32 hasn't found it's way into myhands yet, but I have researched it a bit!
-excellent sega master system emulation
-excellent turbografx-16/PC-Engine emulation
-supposedly there's a "near-complete" sega genesis/megadrive emulator coming, but I'll believe it when I see it.
-decent working NES emu, capable of perfect one if they finish it!
-great c64 emu too
-also in the works - spectrum, colecovision (just like GBA)
-front light unit (a la afterburner) coming
on top of all of that, any SNES/GBA is a bonus!
bear in mind it's not terribly "plug n play" out of the box, unlike GBA..
Welcome!