Got to Dell's support site and punch in the service tag number for that computer, you'll get all the details. Very useful, that feature.

If you install new software onto the thing (I suggest Windows 2000 Server), make sure to use that same support site to grab all the driver downloads and such that are specific to that PC's components.

Something reasonably important to download is the management software for that RAID controller. It will let you poke around and look at the RAID configuration.