Thanks for your reply.
Howewer, I can disable layer breaks - but only manually, not automatically. I can disable it using the fine button called "Ignore Layer Break Options", which is what I press every time. So what I'm after is some way, any way, to free me from having to do this manually. Since ImgBurn allows me to ignore the layer break option it would be especially nice if it could do so automatically. I'll never write these images to a DVD, so the layer break stuff is only a nuisance.
Thanks for the suggestion about using the Clone mode. I'll try that - maybe it'll work better.
cheers,
Richard