Another small update on this subject, there was a recent posting in slashdot's developer section mentioning several open source solutions in the area of WYSIWYG direct page editing (like you might want with CMS).
Their post is
http://developers.slashdot.org/developers/02/09/17/1550223.shtml?tid=154 and two of the solutions mentioned were
1. http://xopus.org/ (works in IE5.5+ and Mozilla 1.0+)
2. http://www.bitflux.ch/editor/ (Mozilla/NS7).
Both have online demos...
