I've uploaded a new version (1.7) of DocumentAnalyzer that supports Windows 7.
http://robwunderlich.com/Download.html
This version should work equally well on Windows 7 or Windows Xp without changes.
If you are unfamiliar with DocumentAnalyzer, you can read about it here.
http://qlikviewnotes.blogspot.com/2009/04/analyzing-field-usage-in-qvw.html
-Rob