Windows XP SP2 and Sysprep

Can someone clearly explain to me how to get sysprep to install 3rd party
drivers?

For example, my sysprep.inf contains

OemPnPDriversPath=Drivers\1\Audio;Drivers\2\Networ k

Each of the folders contains the extracted OEM driver files.

When I restore the image to another machine I am still prompted to install
the drivers.