I want to thank everyone for all the useful information on this site that helped me to pass the PMP certification.  It was mt second attempt and I was very discouraged after my first try.  I have tested and passed certification exams for Microsoft, Cisco,HP, and A+ and this was by far the hardest exam I ever sat for.  I took and instructor led boot camp and studied thier material for my first attempt.  I failed it miserably and then I found this site and others that really helped me.  Exam simulation can not be under-estimated!!!