How to customize form for creating posts/pages?

hi,

i was tasked to make a customized “Add New Post” or “Add New Page” page (probably call it “Add New Newsletter”), for use by the editor.

with multiple wysiwyg text-edit boxes for different areas of a template, so the editor doesn’t have to know html, just copy and paste her content and watch them magically appear on the correct column…

1 for main content
1 for advertorial
1 for a sidebar

The form will be fixed with the fields. so the editor can’t create custom fields of her own.

I will be coding the basic template that renders the editor’s content.

Ideally, all the editor had to do is look for a “Newsletters” button on the left hand menu in wp-admin, click “Add New”, select the date of the newsletter, paste some content in the different text fields, click publish and it’s done.

Can this be done?