@Radheshyam Dhanyabad Sathi. As far as going directly to GC from OPT goes I saw conflicting answers on web with some saying it can be done while other saying it can not be done. I will bring this matter to the attention of our corporate immigration attorney to see what s/he has to say. Also, if you know a good immigration attorney in Dallas area please do let me know (I can consult them next time when I am in Dallas areas to see my buddies).