I know the rough price (thanks Poipleshadow!) to aim for but I seem to have erased from my memory the horrendous time we had clearing customs and going through to pick up the cab.

Can anyone guide me through where we can change up some money for the taxi (found 500 rupeedoopies in my hand luggage!!!) and pick up or go to the desk? where we can get (un bartering!!!!) taxi.
Also can we pick up the form for customs in Mumbai?
Many thanks in anticipation! Travellingtrina and HoneybeeHarvey