[guygee]

Right Click on My Computer =>Manage => Storage => Disc Management (Local).
Is the drive showing up there? Maybe the disk just needs to be formatted and partitioned?

It can be very frustrating when plug-in-play won't work, sometimes these problems are due to flaws in an old bios or chipset firmware. Don't know much about Dells, as I always put mine together from scratch. Real sysadmins love Dells because of the support and uniformity, maybe you could call Dell?