I used my second try today and passed with a 737. The simulations I got this time were much easier than the first time. I used CBT nuggets which I highly recommend. They are somewhat fun to watch and he throws in real world tips continuously. The most prevalent topics were by far NTFS/share permissions, then user/group resources, and finally disaster recovery/backups. How does the 291 stack up as far as difficulty compared to the 290?