Sorry 'bout the delay -- work interfered
@blutach - I'm not a great upgrader. If something works for me, then that version stays. Only if I find an upgrade fixes a broken or missing functionality...
OK, I worked out that ImgBurn doesn't support an "archive" function. It's great for making DVDs of movies etc, but that's not what I needed.
Problem solved: downloaded Burnaware Free, 3 clicks and I have an archive Small downside, it doesn't give me the disk tech-info. But I have ImgBurn
Gordon.