I know you are familiar with the tools and I know you think you know how to use them. But you need to read
Windows Sysinternals Administrator's Reference.
I've finished the first 3 chapters and have to say that this is an amazing book. If you pride yourself on being a strong Windows admin then I have to say this is required reading and will help you get to a new level. IMO this book should be read and chapter 2 should be mastered before attempting to read
Windows Internals: Including Windows Server 2008 and Windows Vista. Although Chapter 1 of the Windows Internals book probably goes into more detail than Chapter two of the Tools book, Chapter 2 is probably the least you need to know.
All that being said has anyone here considered exam
70-660?