UPDATE:
If you’re looking for SATA Driver for Gateway Computer:
http://37prime.wordpress.com/2008/03/24/gateway-drivers-for-windows-xp/
UPDATED 07.21.2007
Gateway® GT5404
Intel® Desktop Board D945GCL (click here for Windows XP drivers from Intel)
Gateway® GT5404 Desktop comes with Windows Vista Home Premium pre-installed. I posted a little review on this computer in March and mentioned that I installed Windows XP Pro on it. Since then I have been getting question on how to get Windows XP to recognize the Serial-ATA drive. The BIOS of the motherboard allows to configure the SATA devices as IDE so that Windows XP installers can detect the drive without having to install the SATA driver first.
The same method also works for Gateway® GT5408 Desktop.
UPDATE: the main database where the pictures were hosted crashed and gone. I’ll re-upload the pictures soon.

I’ll post more on where to get the Windows XP drivers for this computer and Gateway® GT5408 Desktop.
Gateway® GT5404
Intel® Desktop Board D945GCL (click here for Windows XP drivers from Intel)
Gateway® GT5404 Support Page
http://support.gateway.com/s/pc/R/1009371/1009371nv.shtml