Success! Finally! Steve's suggestion worked perfectly. I "printed" my .PDFPlus file (the company is Nuance, not Acrobat) using the free CutePDF driver, opened up the file in Web Designer 6. It opened as a multi-page document and I saved it as .Web file. I was able to open it as multi-page document in both Xara 3.2 usng XP Professional and Xara Xtreme Pro using Windows 7.

Thanks again. By the way, in case anybody was wondering why I was doing this...one reason is we live in earthquake and fire country and in case of evacuation, taking books of cartoons is not a high priority. It's better to digitze them and give a copy to an relative out of state or even the country. Why lose all that work?

The other reason is, of course, it's easier to find things and do them in final if they're digitzed.

I'm very grateful for all the help and support and hope this might help one of you.