You need to figure it out because that is the problem. Call Dell support and talk to a guy in Rangoon who can't speak english!! I'm joking....do not call Dell support, I think they share it with MS!!! In India. Play with your device boot order in the Cmos until you get the CD to be first in line. And you'll be good to go!
Noli Nothis Permittere Te Terere!!
EVGA 680i, Dual EVGA 8800GT'S (650/950), 4 gigs OCZ DDR2 1066, Intel Q9450 at 3.8 Ghz, Koolance Water Cooled, Dual Plextor16x DL DVD+/-RW. Dual WD 250gb 16mb Cache Sata 3.0. 3DMark06 score = 19,168.