ReiserDriver will be an Installable File System Driver (IFSD), used to easily (and natively!) read ReiserFS disk partitions under Microsoft Windows 2K/XP/2003. ReiserFS partitions will appear as additional disks to the Windows operating system, allowing files from ReiserFS partitions to be transparently accessed from any Windows application.
The project is currently in development, with a scheduled final release of August 9th, 2005.
For more information on the internals of ReiserFS, please refer to the ReiserFS resources page.