What I'd suggest for pasting Word content, regardless of editor, is to add a button that first puts the Word content through the server-side wvHtml tool, which

What I'd suggest for pasting Word content, regardless of editor, is to add a button that first puts the Word content through the server-side wvHtml tool, which extracts clean HTML from Word's awful formatting. I know TinyMCE has a plugin API for adding a new button for this to the editing options, and I'm sure the others do too.