I found a great article on install Open Office 3 here. The only problem is that all your spell checking modules are removed from your computer. All you have to do is reinstall them. The following spell checkers need to be reinstalled:

gnome-spell
aspell-en
aspell
wbritish
myspell-en-au
myspell-en-za
myspell-en-gb
hunspell-en-us