I had some extra time today and thought I would try out the Xfce 4.4RC1 installer (Download from one of the listed mirrors here). Ran into a few problems but figured it out. Thought I would share so that others avoid the problems I ran into. Prior to using the installer you will need to install 'desktop-file-utils' from here and 'dbus' (version 0.62) from here. (Newer versions of dbus don't seem to work on a stock Slackware install). Now run the installer and install the needed perl modules. Finish the installer and enjoy

If you would rather not use the installer, you can download the slack package from here. This package was created without dbus support, so you won't need it (however, you won't have desktop icon support this way).

If you would rather have a slack package with dbus support, you will need to get the Xfce source from one of the listed mirrors here, then download the slackbuild (and related files) from here. You will then need to edit the slackbuild script and delete these 2 lines:
Install dbus, the URI::Escape perl module, then compile and install. Again, enjoy

MagicMan

Hey, thanks man. I'm new Xfce convert. Been waiting for something like this...

great advice, thanks
I had gived up it before.