Posted by Keith Hurst on February 25, 2008 at 11:06pm
I found this screencast a great help when I was trying to configure TinyMCE on my site...
http://www.usingdrupal.com/node/11
Be warned that part of the cast won't work in 5.6 because of a bug within the core filter module so you'll need to upgrade to 5.7
Keith