Tool for watching changes in FS

Hi,
I Still got my problem with files under linux on my fat32, so i got the idea to watch changes under windows and compare with changes under linux. Has anyone an idea of how to do this?
What I'm missing are tools for windows to readout fat. And a good instruction on howto and where to debug fs-modules. What I would like to do:
Snapshot of Fat under Windows
Create file
Snapshot again
Boot Linux
Snapshot under Linux
Debug driver and see where he wants to write data too -> compare windows (don't really write as it might crash data)

Cheers,
Karsten