I have that too
Get NesterDC for NES, and DreamSNES for SNES (DUH). I had almost every single NES game ever on DC, and I would for SNES but it runs bad unless osund is off (and even then usually runs choppy)
If you have a PS2 modchip/Gameshark 2/Pro Action Replay 2 or something for PS2, you can use SNESStation for PS2, but i can't use it since codebreaker doesn't work like Gameshark2/PAR