Unfortunately, there's no way for me to provide a study regimen for someone based on a few test scores, even if the test weren't only a few days away. We spend literally hours on this stuff in class or tutoring, and it's all individualized - based on the data from your tests and other homework.
Check out this other post I just finished; it discusses how to analyze your tests to identify your weaknesses.
http://www.manhattangmat.com/forums/hel ... t5290.html
That will hopefully help you to get a better handle on what your particular weaknesses are.
Just FYI - people don't typically have huge improvement in the last few days before a test. In your case, it looks like your quant score is pretty consistent but your verbal score is very up and down, so if you can figure out why your verbal score is fluctuating so much, you might be able to remedy whatever caused it to drop on the last test. Did you take both of your last two tests (the 700 and the 640) under exact testing conditions? (essays, 10 min break, quant, 10 min break, verbal) Did you take them at the same time of day as you took the real test? Was your timing similar in both or did the timing get messed up at any point? Were there any other differences, no matter how small, between your 700 test and your 640 test?