Is that Megadrive (sorry, I'm an eurofag) emulator which its menu bar was bleeding?
The ones I use...
GB/GBC/GBA: VisualBoyAdvance-M
SNES: bsnes
NES: FCEUX
PC Engine/TurboGrafx-16: Ootake
NEC PC-98: Anex86
Gamecube: Dolphin
PlayStation: PCSX-Reloaded
Master System/Megadrive: Kega Fusion