Just thought I let you know I solved my problems a while ago. I went to widows control panel and there you have an intensity settings icon. It is here that you can tweak the cards main settings. after trying a few setting… no more blurry screen and real time preview for mos formats is restored. hope this helps
Amd Dual Opteron 2.2
Quadro 4500
xp Pro
Tyan Thunder Mobo