I was asked how to do install the Thesaurus; thanks, it works! :) For those interested, here's a more detailed walk-through:
(Step 0a) the version of OO.o that shipped with Breezy (1.9.x) is a Beta. Get version 2.0.x as per my website:
OpenOffice.org 2.0 isn't in backports yet (and might not be for a while), so if you want it, go to Terminal, run:
sudo gedit /etc/apt/sources.list
add the following as a single line:
deb http://people.ubuntu.com/~doko/OOo2 ./
(Step 0b) Then go to Synaptic. Press "Reload". When that finishes, press "Mark All Upgrades".
It should tell you that OO.o is going to upgrade; it will give you a "not authenticated" error, but that's ok.
(Step 1a) When OO.o 2.0.0 is installed, download this file:
http://ftp.services.openoffice.org/pub/OpenOffice.org/contrib/dictionaries/dicooo/DicOOo.sxw
(Step 1b) Using root privileges, move it into /usr/share/myspell/dicts (e.g. run 'sudo nautilus' from Terminal)
(Step 2) Run OO.o2 Go File -> Wizards -> Install new dictionaries... A document with links will open; click the language of your choice (e.g. english). Press the "Start DicOOo" button.
(Step 3a) A Window ("DicOOo") will open; press Next. The window contents will change to offer "Spelling checker dictionaries"; press Next. The window contents will change to offer "Hyphenation dictionaries"; press Next. Finally you will be offered "Thesaurus dictionaries"; press the "Retrieve the list" button.
(Step 3b) Click the thesaurus you want, e.g. "English (United States)"; if you want more than one, press [CTRL] while clicking the ones you want. Press Next. The window contents will change; press Next to download. Press Finish when done.
(Step 4) close all OO.o windows that are open. Restart OO.o Thesaurus should now work! :)