If you need to get your emulator fix on, then Easy Emu Nstaller by RavenLife will make your life much easier. This Windows installer works with many of the more popular emulators. You can see a list below.
Homer's RIN v3.3 (Gameboy/Gameboy Color)
ScummVM v0.9.0 (modified - save games location changed)
DGen v1.60b (Sega MegaDrive/Genesis)
Snes9x_TYL v0.4.2 (Super Nintendo)
NEOCDPSP v0.9.1 (NeoGeo)
PSPVBA v1.2.4
MAME4ALL v0.0.3
PSPMaster (Sega Master System)
NesterJ v1.20 (Nintendo - NES)
Homer's RIN v3.3 (Gameboy/Gameboy Color)
ScummVM v0.9.0 (modified - save games location changed)
DGen v1.60b (Sega MegaDrive/Genesis)
Snes9x_TYL v0.4.2 (Super Nintendo)
NEOCDPSP v0.9.1 (NeoGeo)
PSPVBA v1.2.4
MAME4ALL v0.0.3
PSPMaster (Sega Master System)
NesterJ v1.20 (Nintendo - NES)