[CentOS] Problem installing from CD

Tue May 30 11:27:32 UTC 2006
Jeffrey B. Layton <laytonjb at charter.net>

Good morning,

   I hate to bother everyone again, but I'm having some more
trouble. I have a new machine with an MSI  RS480M2-IL
motherboard (ATI Xpress200 chipset) and a  Hammer DVD
Writer (shows up as a Matshita DVD-RAM SW-9585).
   I get the CD to start (in text mode - don't know why I can't
do VGA or better), and it asks me What type of media contains
the packages to be installed. I choose CDROM and then it
says:

The CentOS-4 x86_64 CD was not found in any of your CDROM
drives. Please insert the CentOS x86_64 CD and press OK to retry.

The funny thing is that this is Disk 1 of x86_64. Any ideas?
I've tried a couple of different download sites and I always get
the same problem.

TIA!

Jeff