Thanks that a great help..didnt know about it too till now
Keep it up

SuperCal is a visual display calibrator capable of measuring and correcting most conventional displays, including LCDs, CRTs and projectors. SuperCal doesn't require any hardware measurement devices - only your eyeballs - yet it can be much more accurate, based on how well you pay attention to what you're doing

http://bergdesign.com/supercal/

Come across this in other forumn.Hope it may of some benefits to those who need it
To bad it for Mac only