"One thing I did read that caused a bit of consternation was to uninstall the drivers before the changeover. That makes no mention of how to do so without being able to see the screen!"

From my vague memory of Ancient Windoze (I stopped at WIN98!!!) there is a minimalist default level monitor driver set - you rely on using them in VGA mode which should work on all screens - someone more up to date can clarify this and if you have to manually set this up before you uninstall, or you need to start in safe mode (I think this uses them anyway) etc. You may be able to work this out for yourself by a little bit of help file searching though now that I have mentioned it.