ZEND Certification

I'm sure this has been asked in the past, but I figured up to date info never hurts. I'm going to be scheduling my certification soon, but I wanted to hear from any of you that recently got zend certified recently and if you had any advice. Is there any particular portion I should make sure I have strong knowledge of more than any other? Any sites with good advice for this exam? I have read countless online tutorials, but perhaps there are some good ones out there I have passed up....any good links? I have read the official Zend Certification guide - which with all the grammatical mistakes, I still was able to make sense of 98% of it or at least knew that when they made a mistake, I knew it was a mistake and what should have been there. Anyway, any certification advice, any at all would be much appreciated....... Thanks, B