Are you talking about the quicktags in the “normal” Write panel?
(normal = no wysiwyg animal)
If yes, then you can edit the wp-includes/quicktags.js file.
Thanks for answering. No, I’m talking about adding images to a post. At the top of the Write panel, there is a little icon to add an image. You then insert URL of the image that you want to appear there. I upload images to my site using a separate FTP. I make dozens of posts each day with images, so it would be much easier to simply paste in the file name and have a default path already set up. The default path, in my case, would be http://webdomain.com/images
If you are using the wysiwyg animal (aka rich text editor, aka tinymce aka Visual editor) – I can’t help. I have no idea how that thing works. Maybe some others who are familiar with that editor will be able to help.
(I know you are talking about inserting/adding images to a post)