Mount Volume Notification

Hi all

I have a BIG problem with notification about mounted volumes . I want to implement an application (in user/kernel mode) that could be notified whenever any removable medias( like Floppy or CD-ROM) or network drive is being mounted.
You know ,my app.(in user mode) could be notified about any modification on certain Dir (including file rename , create or delete ) by using 'FindFirstChangeNotification'.
But It does not work on drive which have not been mounted yet.
how can i solve it ?