Driver .INF File Help

Hi,

I'm trying to create a .inf file for my device. It seems to have
trouble finding the C:\windows\system32\inf\driver.inf file and
C:\windows\system32\drivers\driver.sys file. I copy these files
manually, before launching the hardware wizard.

The wizard detects the device and (I think) loads the driver.inf
file because I see the name of the device that I entered into
that file. Then I get the "This driver is not signed by microsoft"
message, and I click "Continue Anyway".

Then, it fails to find the driver.sys file, and I have to *manually*
point to file to C:\windows\system32\drivers\driver.sys which is
where it copies the file to anyways.

How can I have my .inf file automatically detect the driver file
that exists in C:\windows\system32\drivers\driver.sys?

Thanks,
Tim