Ever wanted to manage your Ext2/3 file system from Windows with both read and write access? This guy's taken Microsoft's Installable File System (IFS) SDK & written a driver to do just that. Now all we need is something that can legally do the same thing with NTFS from Linux...

"If you currently have Windows running and you realize that you need some files for your work which you have stored on an Ext2 volume of your Linux installation, you no longer have to shut down Windows and boot Linux! Furthermore, Windows will now be able to handle floppy disks which have been formatted with an Ext2 file system."