bbq555,
I feel your pain! I recall my own dismay at the headache that is called the GRE. For a few months it was the bane of my existence. Keep at it, with a little luck and lots of preparation you'll defeat and overcome this foe.
Just fyi, don't blow it off but also don't let it drive you crazy. Just remember that it's simply a hurdle to be overcome and you can get into any of the top programs even if your GRE scores are not perfect. You simply have to cross a minimum threshold and be 'in the range' to get consideration and almost everyone else who will be applying will also be in this same range.
What will really set you apart will be your SOP, recs and work experience. Never forget this.
While rare, it is possible to get into your dream program even if you bomb the GRE as long as you dazzle the adcomm with a stellar SOP, strong recs from respected individuals who know you well and speak highly of you and your work, combined with substantive work experience that is relevant to what you want to study. Schools want good people who will be successful and reflect well on their program not just good test scores and gpas.
That being said, your chances are better if you combine all of those characteristics with a strong GRE performance.
As someone posted earlier, focus on your pace. It is better to have more correct answers than it is to get this ONE answer correct.
Treat the test as though you were a commander in battle who must make critical decisions under time constraints with imperfect information. Remember that the GRE is Blitzkrieg not siege warfare. If you encounter stiff resistance from one question, take your best shot and pass it by in order to keep moving along to conquer the next set of questions. You will face confusion and uncertainty, which will lead to mistakes, but you must maintain a clear focus on your overarching strategic goal and persist in relentlessly moving forward toward the completion of that goal.