Install a windows driver without the unsigned warning appearing

I'm trying to create a batch install file and one of the tasks it does is install a 3rd party driver. This is unsigned and so pops up a warning and causes the rest of the script to fail on Windows XP Professional service pack 3.

I've tried the following:

 reg add "HKCU\Software\Policies\Microsoft\Driver Signing" /v BehaviorOnFailedVerify /t     reg_dword /d 00000000 /f

 REG ADD "HKEY_CURRENT_USER\Software\Microsoft\Driver Signing" /t REG_DWORD /v Policy /d 0 /f
 REG ADD "HKEY_LOCAL_MACHINE\Software\Microsoft\Driver Signing" /t REG_BINARY /v Policy /d 00 /f
 REG ADD "HKEY_LOCAL_MACHINE\Software\Microsoft\Non-Driver Signing" /t REG_BINARY /v Policy /d 00 /f
 REG ADD "HKEY_USERS\.DEFAULT\Software\Microsoft\Driver Signing" /t REG_DWORD /v Policy /d 0 /f

And none of these appear to change it. The script will have to be run on many machines so I can't do it the manual way. Does anyone know how this can be done?

Solution 1:

This is why you can't do that:

http://support.microsoft.com/kb/298503

It also suggests some workarounds; if your computers are in a domain, you can use a Group Policy setting to configure driver loading behaviour.

Solution 2:

if you ever find the solution to that then you can sell it to virus/trojan authors. They love to know that as well. This would mean they can distribute malware without asking the user for permission. (That's why Microsoft introduced this feature. Don't hack Microsoft.)