Thanks, I'll look into it (you'll gather from the time that has elapsed that it's not top of the priority heap).
Nothing is obvious when you are new to it, and it's usually better to ask than experiment !
Am I right in thinking that the self-extracting download is an alternative to the Windows Installer package ? I'll need to uninstall that first, presumably.
Isle of Mull, Scotland
OS=WinXP Home SP2