Is it possible to disable OS From automatically picking up inbox driver on vista

Hi,

I dont find inf file for our vista inbox driver under %windir%\inf.
Probably it is crypted or stored on a
different name or under a different location or made part of a bigger inf
file that includes all inbox-drivers.

Does anyone know whats done on Vista?
Is it possible to disable the driver installation or OS using this
particular inf file?

Basically I want to use my kmdf driver and sometimes when there is a
problem with kmdf driver installation,
it goes and picks up this inbox driver. I want to prevent this.

Thanks,
-Praveen