>But I'd still like to learn if C: can be RAID 1 with 2 SATA drives AND D: and DVD, etc as discreet other drives.

I have a server that uses RAID 1 to mirror drive C: (2 scsi drives) and I have an additional IDE HD as unit D: and two CD-ROM drives as E: and F:

So yes, you can have what you want as far as I know.