Hi bob, and welcome to Piriform.
Sorry to say Recuva will not scan a CD or DVD.
It can scan through your hard drives, memory cards, and USB sticks, in other words, most forms of storage except CD\DVD media.
Maybe something like this will help:
http://www.diskinternals.com/cd-dvd-recovery/features.shtmlI have no idea what it's like, but you can apparently try it for free, and I'm sure if any of the other members have any experience of software that can recover from an Optical Drive they'll jump in.
I found a few examples of freeware claiming to be able to recover from CD\DVD media, but the sites were questionable to say the least, so I would be careful in checking sites out if you search yourself.
Hope that helps.