Before installing this you have to remove all kde4 packages. The best way to install the packages is using the commands: cd /path/to/"packages"/dir upgradepkg --install-new l/*t?z kde/*t?z In case you wanted to compile your own packages: * use source/download_source.sh script to download the sources * build order should be: libraries: qt-3.3.b qca-1 qca-tls poppler dbus-qt3 arts kde: same as in KDE.SlackBuild * in order to build java bindings (kdebindings package) install jdk from slackware installation disk's extra directory