Thanks for the above. I ought to be more specific. After entering WINSTALL.EXE in RUN, the CD (which has text and images, not programme software) loads, but a message appears: ' The WIN16 subsystem has insufficient resources to continue running. Click on OK, close your applications and restart your computer'. This does not work. I run Windows XP and have plenty of memory etc. I now gather this may be an old problem which Microsoft know about, but have not chosen to fix.
Are you using a windows 3.1 disc when XP is installed?
You can't install windows 3.1 'into XP.' They are separate OS's.
Answer, Well, two separate computer professionals assured me the Windows 3.1 CD 'ought to' play on XP, and one of them spent some time checking (without success) for problems with my computer. However, I have now discovered and obtained a 'patch' (installation disc) from the original vendor, which thankfully works. So the difference in operating systems is evidently not without remedy. All the same, from blogging elsewhere on the internet, it seems the w16 subsystem (whatever that is) may be a wider problem.