Take a look at the Dell OpenManage Server Assistant the next time you find yourself re-installing a Dell server. It was my own fault that I found myself in this situation. Dell must have supplied the disk so I didn't get too depressed, thanks.
I was highly amuzed to note that the setup program to install the drivers and setup the RAID devices boots the machine to Linux, installs a web server (for sure not IIS) and runs the whole install from an X Windows browser session.