I just got back from Prometric after passing 70-290 with a score of 871. To be honest, I was really surprised to pass the exam, because I guessed on a lot of questions! Some of the questions were very unclear!
I had quite a few simulations, but the multiple choice questions were the majority of the test. If you're planning on taking the test, make sure you know your command line utilities (I had a few questions regarding that). Also, know how to set-up roaming profiles in active directory, manage access to shared folders, terminal server and shadow copies. There were quite a few questions regarding NTbackup as well as performance monitoring.
I started studying about a month ago, I used TestOUT series (which was a little outdated and very boring, but otherwise useful). Make sure you know WSUS (not SUS!). I also used MCSE in a Nutshell from O'Reilly for my review. I had some previous knowledge of Server 2003, but no hands-on experience. Having a VMware lab certainly helped!
EDIT: I just realized that there is a dedicated forum for 70-290 - sorry for posting here! Will not happen again
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