I am using scripts from slackbot.
The website is:
http://slackbot.sourceforge.net/
I follow the project and it work
very well for me. If you have problems
with it, there is a forum.
The main script (SETUP.sh) build all the packages
and install/upgrade those for you. And in the end
you have all the packages that can be install on
other computers running slackware-12.2.
Richard