Is this a true sata drive or is it on an adapter? I have seen problems with the maxtor drive and sata adapter here recently. If it is, it could be that.
Which jumper is in the right place? Sata drives do not need to be jumpered anymore so they dont have jumpers.
Try getting the latest drivers raid drivers as well
ftp://ftp.asuscom.de/pub/ASUSCOM/TRE...SILICON_IMAGE/
Just copy everything but the manual and program also the read me to a formated floppy and press F6 when it starts to boot from a scsi or raid device during the install.
You must load the drivers properly to get windows to install, that would likely be the problem that windows isn't seeing it.