Ok I finally ordered two different green screens. One is made from a nylon parachute type fabric and is a neon bright type green.
http://www.greenscreenwizard.com/Popup5x7.aspxI ordered a plastic one from EBay which is little bit darker green than the one above
Click To ViewI have not ordered a muslin one yet.............. i was bit worried because the reviews I have read said that it wrinkles bad.
Billy D.