Have just come across, and installed, an alternative called WP Super Edit at http://www.funroe.net/projects/superedit/
This seems to be working OK in WP 2.2.1 (via Firefox) and at least gives the extras I’m needing, though not all… has an Options page, much easier than my attempts with the “advanced TinyMCE” plugin… less convoluted…
Found it, installed it, use it… works Ok in WP 2.2.1. Thx