Question about coolant flush

Hi,

Going to flush my cooling system and have the flush kit and flush fluid ready to go. My problem now seems to be how to drain. I think I have found the drain spicket at the bottom of the driver side of the radiator but it is awfully hard to undo. It looks like one of those tighty only jobbers and don't know what to use to open it. It is also in a very tight spot with the air dam in the way on the bottom and the front portion of the subframe in the rear, making it pretty difficult to get anything in there that could be used to loosen. Any ideas on how to do this? Thanks.

The drain has a plastic plug. It is located on the lower left hand side of the radiator facing the engine. You do not remove it and be careful not to break it. Take the end of a 1/4" drive handle like from a 1/4" socket set. Insert and then turn about 1/4 of a turn counterclockwise only. Coolant will start draining out.

See pic below.

http://i5.photobucket.com/albums/y186/lizzywiz/drain_02.jpg
Note: Drain plug removed for demonstration purposes only.