Add AjaxSpellCheck in RadEditor WebPart
To enable the AjaxSpellCheck tool, you need to modify the ToolsFile.xml which is located in the following folder:
/Program Files/Common Files/Microsoft Shared/web server extensions/wpresources/RadEditorSharePoint/6.0.0.0**1f131a624888eeed/Resources/
and add the following tool:
<tool name="AjaxSpellCheck"/>
To enable the AjaxSpellCheck tool in List (Blog) scenario, open the ListToolsFile.xml file and add the following tag:<tool name="AjaxSpellCheck"/>