Many thanks for your replies. Sorry for the delay, but I'm working with
difficulties on an unfamiliar computer, while I sort out the problem!

The only reason for wanting to keep the original XP, is that I have an old
e-mail & news program, which would be difficult move. Although I don't use it
any more, it's got mail going back 10 years. Unfortunately, it's not compatible
with other mailers.

The Ubuntu 8.04 just happens to be one one of the disks. I plan to copy the
bookmark file, and then delete 8.04.