This gives you some hints on OpenOffice, please notify me if you want to change something in the wiki (tpowa package maintainer), the packages are not source compiled packages, only OO.org's binaries packaged for pacman.

OpenOffice 1.1.4 Setup

Installation:

==> 'pacman -S openoffice-base'
==> YOU HAVE TO INSTALL A LANGUAGE-PACK ELSE IT WILL NOT RUN (english is not included)!
==> 'pacman -S openoffice-XX' (XX is your language)
==> IF YOU NEED SPELLCHECKING YOU HAVE TO INSTALL ADDITIONAL PACKAGES!
==> 'pacman -S openoffice-spell-XX' (XX is your language)
==> or use the included template for installation if your language is not covered

Upgrade
==> Upgraders to new 1.1.4-3 package please reinstall your openoffice-base after upgrade,
==> due to a pacman bug some files get lost during upgrade.

Addons:

==> OpenOffice quickstarter is available for KDE
==> 'pacman -S oooqs'

Known Problems:

==> If you experience OpenOffice is not starting check your DRI settings
==> that you have proper permissions in /etc/X11/xorg.conf
==> it could look like this:

  Section "DRI"
  Group "users"
  Mode 0660
  EndSection

User SETUP:

==> Run '/opt/openoffice/setup' to setup OpenOffice for a regular user
==> Run 'soffice' to start OpenOffice.

OpenOffice 2 Setup:

Installation:

==> 'pacman -S openoffice2'
==> YOU CAN INSTALL LANGUAGE-PACKS (english is included)!
==> 'pacman -S openoffice2-XX' (XX is your language)
==> IF YOU NEED SPELLCHECKING YOU HAVE TO INSTALL ADDITIONAL PACKAGES!
==> 'pacman -S openoffice2-spell-XX' (XX is your language)
==> or use the included template for installation if your language is not covered

Known Problems:

==> If you experience OpenOffice2 is not starting check your DRI settings
==> that you have proper permissions in /etc/X11/xorg.conf
==> it could look like this:

  Section "DRI"
  Group "users"
  Mode 0660
  EndSection

or if you don't want to enable DRI and related stuff, run it as ROOT

User SETUP:

==> Run '/opt/openoffice2/program/soffice' to setup OpenOffice2 for a regular user on first
==> startup and to start OpenOffice2.