Good job.
This tool has been very useful for us. Even we've improved it in three ways:
1.- Fixed bug with root directory backup ()
2.- Recursive directory backup
3.- NTFs included in directory backup
We've included modified knsfbackup.c and compiled nknback.exe in Docs section, but I don't know how to download it or if it is uploaded in the right way.
Any way, feel free to contact us at bbuades at caib dot es.