Blogging pages - Format Bottom Section

If you login to my website at http://blog.christiangays.com/ and go to My Stuff -> My Blog -> Create New Post there is a form from Frontier Post, much like a forums form.

Is it possible to
1. change Categories (but only on this page) to Author
2. remove the word Actions
3. remove the scroll bar beside categories selection.

See screenshot.
Thank you again!