3rd time lucky. After 2 fails I passed it with 975. For future test takers, 70-299 book alone is not enough for this exam. I used Brian Komar's w2ki3 PKI book and the following:
Download details: Windows Server 2003 Deployment Kit: Designing and Deploying Directory and Security Services (chapter 16 and 17) as an additional resource.
So far i have 270,290, 291 and now 299, which gives me MCSA.
Next one 298 and then 294, 293 MCSE
and will keep the 351 for last. MCSE:Sec.