After a couple of years of development and some idle moments, DiscCatalog has finally came and totally rewritten in Visual C# and free, of course.
It is still in some kind of beta testing state.
If you think you could use this piece of software, please, download it and give it a try.
No need to install it. Just download it, extract it and you're ready to go.
You need to have Framework 2.0 installed, but there's a good chance that you already have it.