Even after having a horrible auto accident 1 hour before the test, I passed 290 with a 799 score! 4 hours for the test but I finished at around 2 hours 45 minutes.
YAY!

I had 45 questions and 3 were full-on sims with a virtual OS and all. I didn't see as many WSUS questions as others have mentioned in their posts. I had one WSUS question and it was painfully simple. It seemed like I had quite a few backup/recovery questions and they all came at the end of the test, probably 5 or 6 of them.
Well I have 291 scheduled for this Friday but the yahoo's at the test center called to tell me they had to cancel me cause they are closing their test center for a month. I am so ticked off at that I can't even tell you. Oregon (where I live) has only 4 Prometric test centers and none of the other 3 have appointments available for 291 this month.
I gotta do 291 by June 30th to get that accelerated track to Server 2008. It won't be a problem as long as I can find a place to test. It looks like I am going to end up driving to Seattle, WA or something (150 miles)

Anyway, I used the Microsoft 290 book and the Tech Notes from this site to study.