I created a firefox-spell-pt-br package to firefox3 (from [unstable]) and it is working. The firefox3 of [unstable] is still in /opt/mozilla. This is the only difference. Below is the PKGBUILD: # Contributor: Hugo Doria <hugodoria@gmail.com> pkgname=firefox-spell-pt-br pkgver=3.0b5 pkgrel=1 pkgdesc="Portuguese (Brazil) dictionary for Firefox" arch=('i686' 'x86_64') license=('GPL') depends=("firefox3>=$pkgver") makedepends=('unzip') url="http://www.broffice.org.br/verortografico" source=(http://www.deso-se.com.br/downloads/pt_BR-2008-02-21C.zip) md5sums=('fbcab4da77624ec53b9b7846e452af12') build() { cd ${startdir}/src # remove all unwanted files rm *.TXT install -D -m644 pt_BR.aff ${startdir}/pkg/opt/mozilla/lib/firefox-3.0b5/dictionaries/pt-BR.aff || return 1 install -D -m644 pt_BR.dic ${startdir}/pkg/opt/mozilla/lib/firefox-3.0b5/dictionaries/pt-BR.dic || return 1 } Now you need only to adapt to your language. -- Hugo Doria http://hdoria.archlinux-br.org