I've heard of an advanced version of Dynamic HTML Editor, but I can't find it anywhere. This page: http://www.hexagora.com/forum/en_members.asp has a link for an enhanced v1.7 but it won't download using either IED6 or Firefox 1.0 Preview.
The page 'members' you have seen is old, now I've deleted it ;-) Now there is only one (enhanced) version of Dynamic HTML Editor, the version 1.8. Over this year I've worked in order to release the version 2.0 of Dynamic HTML Editor which will be available in a few weeks (I hope ;-))