Help Oil Leak

Hi There,
I have a Evo 2, And the other day I pull her out of the garage(she has been sitting for awhile) Only to find a large puddle of oil on the floor, Coming from frunt of the car, Also the oil pressure light was flashing!

So my qouestion is, Where to begin to sort this out?, Any advise would be greatful
TIA
Evo

I was in the same boat with my stratus, Check the oil pan gasket, pretty hard fix on the stratus(only because you have to remove engine mounts and a support module, dont know about your car. so i got that fixed and now i find out its something else, to sum up my story dont worry too much, a gasket could be all it is