The message means that Windows didn't find your PERC controller. This is because it doesn't have a driver for it (native on the Windows install CD/DVD). To get Windows to install you have to download the PERC driver and extract it to a floppy drive. Now you reboot to the Windows CD and at the early stages (where it is scanning for raid and scsi adapters) you press F6 to manually add a scsi/raid driver. You have it load the driver from the floppy and it now should see the raid disk and be able to install Windows.
Member since 2003