Many thanks to MJR and to Jenny for encouragement and tips. Especially to Jen for sharing a joyful success story!
As it happens, I do have a fairly bare-bones installation of Debian Lenny for which it will not be disastrous if it should go wrong, so I'll use that as a test (and as a training-ground for myself). Then I can more objectively contemplate the real thing.
Best wishes to all, Ted.
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