Send a picture if you can, it might give further hint as to what the problem is. Broken radiator connection? Fan belt? Water pump? I'm just guessing. You may have escaped serious damage, however. If your luck has held, my guess is that you might be able to get by with replacement of whatever hoses let go, or belts, or the radiator, or whatever, plus a complete flushing of the coolant system, radiator AND engine block. Sitting for six months invites the accumulation of deposits, and I can only assume that time period just adds to whenever the last time the system had been flushed.