Folder and Registry work in WinXP

I'm tinkering with approaches for a program that will force WinXP to remember folder settings. So I have a few questions, I'd appreciate help on any of them.
1. Is there any way to return actual memory addresses for File s?
2. (WinXP) How does the registry store pointers to folders?
3. (WinXP) Is there any online source that will explain what parts of the registry WinXP uses for different functions?
4. Can you think of any Java tools and classes that I might consider in an effort to modify file systems and the registry? (The only significant one I've found so far is File)
Thank you.

in http://www.horstmann.com/corejava.html, and I can't remember if it is in volume I or II, there is a an entire example of an application that fiddles with the windows registry.
on monday when i have access to the book I will have a squidge.however if you can't wait there is a link 'download code' at that web page.

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