Hey up guys,
I've been studying for the 70-620 exam now for some months using the Microsoft 70-620 Configuring Windows Vista Client Self Paced Training Kit by Ian McLean and Orin Thomas. I'm booked in for my exam in about a month.
I've a couple of questions for you 70-620 certified wizards out there. Firstly, I'm a little worried that the Microsoft 70-620 Configuring Windows Vista Client Self Paced Training Kit won't cover all the topics on the exam! For instance, Bit locker doesn't even get a mention in the Microsoft 70-620 Configuring Windows Vista Client Self Paced Training Kit!!! Surely there's something wrong with that! Am I right to be panicking? Do you think if I know the Microsoft 70-620 Configuring Windows Vista Client Self Paced Training Kit inside out I should be ok for the exam?
Secondly, the Microsoft 70-620 Configuring Windows Vista Client Self Paced Training Kit comes with an exam engine which is great for testing my knowledge and exposing areas in which I need to strengthen my understanding. However, I've pretty much exhausted the questions and can answer them all correctly! Do you think that means I should be ready for the exam? I need another source of questions, the questions you get online are very poorly written. Does anyone know where I can download PASSED PAPERS that DON'T contain questions that will be included on the actually exam (I don't want to **** myself having put in so much revision)?
Final question, what is the passing percentage required? Someone has told me it's 85%? I've also been told Microsoft exams are usually 70%? Clarification would be appreciated.
Thanks to anyone who took the time to read this. Further thanks to anyone that replies.  

Regards.