Thanks for replying Dennis
After inserting the CD, autoplay fires up the install screen, and the only relevant install item is labelled "Install Autostar Suite Astronomers Edition". There are others, but they refer to the Moon map install, Messier interactive catalogue, etc.
It seems to install OK - but comes across a pre-existing (and later) .NET framework so I tell it not to overwrite the newer files. It then installs the MS Text to Speech engine as requested.
I joined the Meade 4M club thingy and downloaded the Version 4 update, but upon firing it up I get a message stating that it can't find the original installation in order to upgrade it.
I'm thinking a problem with the installer screwing around with .NET and DirectXas installed on my Thinkpad's Win2kPro. I'm going to try it tomorrow on my Fujitsu Tablet PC which at least runs WinXP SP2 which is a known quantity.
I'll let you you!
Cheers
Chris