Passthru of Windows XP DDK : Installation Problem

Hi

While Installing Passthru on Windows 2000 Server ,I get Following Error :::
“Could not add the requested component. The Error is : The Specified module
could not be found”

In Setupapi.log I found the Error "The Third-Party inf doesn’t contain
Digital Signature Information "

In Hardware TAB of System Properties ,in Driver Signing option I have
selected " Ignore - Install All files regardless of file Signature "

But it doesn’t work.

Regards
Deepak

Regards
Deepak