Holleran's CEN Review book and accompanying CD were really good review materials for the test. I just took it recently and found the review questions to be a tad more difficult than the test questions. Also, actually doing the cd on the pc is good practice for taking a computer administered test. Another good predictor of how you will do is ena's sponsored online practice test. It's only 50 questions versus the actual 175, but it covers all the topics that are on the test statistically by subject. Please see links below and good luck!!!
