How can I increase the size of the entry box?

I think the size of the editor is the size of textarea (same width, same number of lines). In my site I have this in my theme css:

.resizable-textarea {
width:99%;
}

I think it's good idea to make it configurable. I mark is as feature to one of next release of CKEditor module.

Just a note for anyone else trying to figure this puppy out. This works in D7! :)

Go to CKEditor Profile > Edit > Advanced Options

You will see the "Custom javascript configuration" and in here you can add

config.height = '700px';

Be sure to get the syntax right so it doesn't break the editor on load. There are plenty other settings as well that you can choose from here: http://docs.cksource.com/ckeditor_api/symbols/CKEDITOR.config.html#.height

@jeffrey.dalton
your solution also works in D6
IMHO there is no need to do this as configurable option because user can use CKEditor config options to set width and height of editor.

#8 suggests that this go in the documentation.

I think we ought to add this only for documentation as @jcisio said. We don't need this in configuration panel, because height of CKEditor depend on textarea height, so if someone want to change it, he could set this in "Custom javascript configuraiton" - #7 or in configuration file of CKEditor.

Greetings

@jeffery.dalton:

If you do this, you will a) loose toolbar at top b) loose growth widget c) etc. As well, it will effect ALL editor windows globally; often one might want to reduce the teaser window, while increasing the node body input.

Here's how I accomplished the same, via custom module (roughly):

function MYMODULE_form_alter (&$form, $form_state, $form_id) {

        if ($form_id == 'story_node_form') {
//              dsm($form);
                $form['body_field']['body']['#rows']=9;
                $form['teaser_field']['teaser']['#rows']=4;
        }

}

// alter ckeditor height...  does not work w/ckeditor not wysiwyg module...

The dsm()s may prove helpful to you :)