Disc Drive not showing up under Drives, not loading discs, ect.

It seems that there are many problems with Vista and disc drives, but I don't
see any that look like the same exact situation, so I wanted to ask
seperately.

First, here's a screencap of "My Computer" only showing 2 drives, the main
CPU and the "Recovery" drive' no disc drive at all.
http://www.fileden.com/files/2007/5/...MYCOMPUTER.jpg

As I was looking for answers I found someone talking about a few possible
remedies involving the "Computer Management" program or w/e, but when I went
to the Computer Mangement and looked for Drives, the only two that showed up
were the CPU and "Recovery" again.
http://www.fileden.com/files/2007/5/...nagement01.jpg

Then, I saw the "Device Manager" section, and FINALLY at least SAW the drive
under the list, but it had a yellow exclamation point icon on it. No matter
what I did, it didn't "fix" itself; I searched for new Hardware,
software/driver updates, nothing happened at all. I even then tried disabling
it and re-enabling it, and nothing again.
http://www.fileden.com/files/2007/5/...nagement02.jpg

Any ideas, anyone? Thanks for looking/helping!

-Gary