CD Not Recognized after initial screen at install

[David Armstrong]

Hi FreeBSD Folks,

I'm installing FreeBSD and, although the installation can boot from the 
CD, when I select a CD/DVD as the installation source, it says it can't 
find the CD. Obviously, the BIOS can read the CD because it booted from 
it, but apparently FreeBSD seems to be unable to see it.

Any thoughts on how I can get this to install?

Thanks,

Dave