Has anyone tried to tweak the import folder to get something other than one of the predefined options? What I'd really like is something like <root>\YYYY\MM.

I found the registry key that appears to control this:

HKEY_CURRENT_USER / Software / Microsoft / Windows Live / Photo Aquisition / Camera / FilenameTemplate

My current value is:
M:\Pictures\$(DateTaken)$([ ]GroupTag)\$(OriginalFilename).$(OriginalExtension)

I could probably get the behavior I want if I knew what the $(var) options were. Does anyone know?