PSX Doom with a mouse?

Anyone know a way to play psx Doom with a mouse? I have one emulator, GSVideoPatchXP, but it doesn't allow for use with a mouse.

For what it's worth, the original PSX Doom didn't support a mouse. (PSX Final Doom did... but it was sort of pointless since the PSX mouse didn't have enough buttons.)
But since you're using an emulator, who knows; maybe there's a hack out there that would allow it...