Flock

Flock work only in windows platform XP pro SP2..
im not sure for other edition of windows ( have not try yet )

also
Flock can only lock folder under drive path:

example :

c:\Folder-you-want-to-lock

or

c:\Folder\Folder-you-want-to-lock\...\...Folder-you-want-to-lock

will not work in opened folder :
make sure that the folder you have choosen is closed ..

please send me infos to fix this problem....