toyomoho and csaxon asked some good questions that would help give you some advice. Is it a constant stream of fluid (not knowing if it is actually water) and does it stop shortly after turning off the car? If you start the car and leave it in park, will it start to leak while running (let it run for about 10 minutes to determine this). If not, how long does it take after turning it off before it begins to leak.
Once you turn it off take a real good look to see if you can determine where the leak is coming from. Start where the fluid hits the ground and work your way up.
Where it hits the ground may be a foot or two front/back or side to side from where the leak actually begins if it is running across a hose or something before actually dripping to the ground.
Ok, I can't resist - does your car have a rear engine too?

Sorry, I'm an admitted smart a$$ at times.