Hi bhamini1,
To start, it would probably be a good idea for you to start your own 'thread', instead of continuing on in this one. Before I can offer you the specific advice that you're looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
1) How long have you studied?
2) What materials have you used?
3) How many times have you taken the Official GMAT? And how did you score on each attempt (including the Quant and Verbal Scaled Scores)?
4) What is your goal score?
5) Do you have an exact Test Date scheduled yet?
6) When are you planning to apply to Business School?
GMAT assassins aren't born, they're made,
Rich