On the bottom right side of the radiator there is a hose that is attached with a clamp. On your model year there was actually a campaign to replace that clamp. What it does is connect the power steering hose to the radiator. Sometimes the clamp expands and when you start the car the pressure blows the hose off the male end of the connection on the radiator. If the clamp is still there you can reattach it (I believe you need an 8mm socket) for the time being, but you will need to replace it. You can go to a dealership or to a parts store. The clamp will run you maybe $5 if you prefer to do it yourself.