If you have more than 1 Hard Drive installed and are thinking of useing or have RAID set up on the Hard Drives the install is more complicated. you may need to install Drivers onto the hard disks before installing Windows to use the raid setup.

Also see www.dell.co.uk and the following Links

Electronic Manuals

http://support.euro.dell.com/support/systemsinfo/documentation.aspx?c=uk&l=en&s=gen&~cat=12&~subcat=84

Forums

http://forums.us.dell.com/supportforums

"Raid Install" is a good search phrase for installing Raid Operating systems on a Precision , Dell Dimension ETC with More than 1 hard Drive and a raid capable system