I would suggest cleaning it all up and starting from there. Keep a close eye on it in an attempt to find the leak... If you suspect power steering, jack it up, put it on jack stands and have someone turn the steering wheel and see if you have any seepage or leaks from there... If there is no leak there, then you can move on to your engine, and go from there... I've had a power steering leak before, but towards the rear, and it was a short hose, which was a real bitch to replace, almost like the hose from hell on the MR2.