Since you've posted this twice, you must be desperate.
And I'm not sure I can help you.
If I were you I'd get my hands on some questions you haven't seen before, and find out where my weakness was.
If your weakness is SC, read good writing. A lot of it, Literary criticism, WSJ, The Economist
If your weakness is RC, get an LSAT study book. There's plenty of tough RC on the LSAT.
If your weakness is CR, go to a bookstore and find a book on informal logic.
If your weakness is DS, I think you're pretty much screwed. Keep doing practice questions.
If your weakness is PS, find an Algebra textbook, do every problem in there.
If you're weak everywhere, you have two choices:
1. accept that not everyone can get a 700 on the GMAT, or
2. practice, practice, practice. Download all the GMATPlus exams, and do the problems until you are exhausted, and then keep going. Since they don't give detailed explanations, you're forced to try to figure out why you missed certain problems, If you can't figure it out, post it here.
If you can do paper problems much more successfully than the live CAT, hire a good psychologist to help you beat your test anxiety.
That's all I got. Good luck.