Simply, what I need is a WordPress sidebar text plugin with TinyMCE intergrated into it.
Look at this plugin:
[url removed, login to view]
I need this without the title "Title" textfield, but with the TinyMCE integrated into it.
This feature needs to be available for each "Page" and "Post" area in Wordpress admin. So my clients can easily post text content to the sidebar of their individual "Pages" and "Posts", without the knowledge of using HTML tags.
PM me if you need more information.