How to add file extensions to list of acceptable in IMCE I am using Ckeditor editor/IMCE file upload. 
How do I get to the config settings where I can add more extensions which are accepted?
Go to admin/config/content/wysiwyg. Under the textformat table if CKEditor is choosen on full html for example under the operations column, select edit. And you should see buttons and plugins, and you should find the Imce checkbox listed as one of the last checkboxes