If you want to use TinyMCE from Moxie code then it doesn’t really need a plugin:
Just follow the instructions for the Extension by getting it here then
Depending on the template that you are using for the WIKI, open the file (for example) default.php in the default folder (under wiki_themes) then:
Find the line 27 after the meta tags and add the following:
</script>
tinyMCE.init({mode : 'textareas', theme: 'advanced', theme_advanced_buttons1: 'bold, italic, bullist, numlist, outdent, indent, undo,redo, link, unlink, cleanup, code, removeformat, formatselect', theme_advanced_buttons2: '',theme_advanced_buttons3: '', theme_advanced_blockformats: 'p,h2,h3,h4',relative_urls: 'false',remove_script_host: 'false', convert_newlines_to_brs: 'false',force_p_newlines: 'true', cleanup_on_startup: 'true'});</script>
Notice the text ‘path to your’ - you need to change to your location of the tiny_mce javascript file.
The settings are mine. You can put all sorts in here but I suggest that you keep it simple.
One more thing: You need to configure the wiki so that ‘any HTML is allowed’, other wise heading tags won’t work.
This is just my first stab at this, so if anyone notices any issues, let me know.
Further recommendation: I suggest that you create your own wiki template and edit that rather than edit the default one.