iRite 1.0.3 will not be compatible with IE 9.
it uses an older version of the FCKEditor that has been discontinued, and will not be updated to support IE 9.
HTML Editor is the replacement for iRite.
HTML Editor 3.0.2 Uses a newer Version of the CKEditor that has been updated for IE 9
To have iRite style WYSIWYG style editing that is compatible with IE 9, you will need to purchase an upgrade to HTML Editor 3.