Unable to load PERC S100 RAID driver for Windows SBS Server Repair

I'm attempting to perform a server recovery with a back located on an external USB drive.  However, when I boot into the server repair environment, I must load the driver for my PERC S100 RAID controller.  When I select bcraid.inf from a USB thumb drive I receive the error "The specified location does not contain information about your hardware".  I'm fairly certain this is the correct driver.  I've also downloaded and tried a 32 bit driver and get the same error.  I can see the external usb drive where my backup resides, but not the HDD where I need to restore to.  Can anyone help?

Thanks