Install additional fonts (like Arial) in Openoffice

Download webfonts form http://www.freedesktop.org/software/fontconfig/webfonts/

Unpack it

Open each desired font file (like arial32.exe) with Archive Manager and extract font files to a temp directory.

Select all desired TTF files and open them with Font viewer.

In the bottom right of the application window, click on "Install Font"

Files will be copied under ~/.fonts/ directory.

Then, use Openoffice "Printer Administration" to add new fonts.
Files will be placed under ~/.openoffice.org/3/user/fonts