Took both test yesterday and passed.
OS I got a 727.
I used the tests on examdrill and freecompti. Also the info on the site and several tech books to study for both exams. I also installed VMWare and installed inside of VMWare Windows 2000, NT, Me, 98 which I could run while in Windows XP. Every practice question I got that asked about a command I didnt already know or a menu I never looked at before I would load up the OS real quick and try it. That was a big help. I did not study to pass the test...I studied to know this stuff....passing was the reward

Good luck to the rest of you. Work hard and you will not have a problem.