Redirector, DefineDos API

Hi,

I am writing a network redirector. I expected DefineDos API, if specfied
with the redirector sys file path in the third parameter, like
\Device\MyFSD, to call an IRP to my redirector, but its not happening. Can
anyone please let me know, what should be the communication between
user-mode application and the driver be, since CreateFile expects the
symbolic link, which is going to be a drive letter and is bound to change
after DriverEntry.

Please help,

Regards,
Chai