I'm currently writing an application in Java that requires me to acess
the Windows registry. Part of the application is to provide a full
object orientated method of doing so. I've settled on a method using
JNI, and am currently in the process of writing classes that represent
the different data types present.

What I am having difficulty with is sourcing information about these
data types, i.e. their length, structure, etc. I've found some online
(http://www.sysinternals.com/,
http://support.microsoft.com/default.aspx?scid=kb;en-us;101230)
information that gives me a basic starting point, but don't really
seem to be indepth enough to solve all my problems. There are also a
multitude of books available on the subject, but I don't really know
which one to choose.

Can anyone help me find some good indepth information?