Hello Chuck,

If I understand you correctly, you want to change the default Facebook autoposting image.
>> If it yes, then you need to upload a new default image into this folder: ( /components/com_easyblog/assets/images/default_facebook.png ). If the uploaded image have different name, you need to change it. You can access this file: ( /components/com_easyblog/classes/facebook/helper.php ) and apply the hack.
If you can't do this please provide us ftp access, so that we can apply these changes to you.

>> If it no, can you explain it more, so that we able to understand it well.

Hope this will work and please be advise.
Thanks.