Just open the drain cock to drain out the coolant,it shouldn't fully remove it should just twist open to drain out the coolant.
To Order car parts online:--To get heavy discount on car parts .Click this link below:----
http://technoanswers.blogspot.com/2011/05/from-where-to-order-car-parts-online.html
For car error code diagnosis click the link below:---
http://www.automd.com/diagnose/?amdcid=apwldrbrd1
Car no start:--
http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html