I’ve just stumbled upon this post about an easier way to get the further buttons on the wordpress editor.
Just hit alt-shift-v (Firefox) or alt-v (IE) to toggle the advanced toolbar when on the write or edit page. Easy!

Mostly for my own reference so I don’t have to keep searching!
In wp-includes/js/tinymce/tiny_mce_confg.php find:
$mce_buttons = apply_filters(’mce_buttons’, array(’bold’, ‘italic’, ’strikethrough’, ’separator’, …
Add any of the below (in place of …, or where ever you want it to appear on the menu bar):
bold
italic
underline
strikethrough
justifyleft
justifycenter
justifyright
justifyfull
bullist
numlist
outdent
indent
cut
copy
paste
undo
redo
link
unlink
image
cleanup
help
code
hr
removeformat
formatselect
fontselect
fontsizeselect
styleselect
sub
sup
forecolor
backcolor
charmap
visualaid
anchor
newdocument
separator
Be sure to wrap any new tags in the correct format, and comma separated [...]