Hi SJ,
With your score goal, you'll have to raise your Official Score 230+ points. While that might seem like a difficult task, it IS achievable at this 'level.' However, you'll likely need another 2-3 months of consistent, guided study time - so 1 month is likely not going to be enough (even if you can study a lot during that time).
Before I can offer you any additional advice on how best to proceed, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied?
2) What materials have you used?
3) How have you scored on each of your CATs (including the Quant and Verbal Scaled Scores)?
4) On the GMAT, did you have to 'rush' to finish any of the sections? Did you leave any questions unanswered?
Goals:
5) When are you planning to apply to Business School?
6) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich