Any GMAT Software that's good?

[Al Neri]

I tried studying with a book and its just not working. I need just to take the GMAT and get a score around 610... I got a 1300 on my SAT without studying much, the administrator told me "Our average GMAT score so far is a 610; however we have accepted many candidates who have scored between 530 and 690."

Any ideas?

I need to take the test within the next 3 weeks.