Help needed to get the maximum score

[dipbha]

Ok, I've been scoring pretty well in practice Gmat's.

Detail:

Kaplan Gmat Premier Live 2010

Practice CAT 4-
Overall Score: 750
Quant score- 52
Verbal Score - 48 ( I think this should be lower. I got 10 questions wrong.)

Gmat Prep-

Overall Score: 760
Quant score- 50
Verbal Score - 42(7 wrong)

Kaplan Gmat Premier Live 2010

Practice CAT 5-
Overall Score: 760
Quant score- 52
Verbal Score - 50( 8 wrong)

I am taking the GMAT on 10 Aug.

My question is, What do you think will help me score something like 790 or 800 and what material should I use?
Any help for essays would be great as I am really poor at citing examples.

Thanks for your replies