This tutorial will show you how to change your window manager to xfce.

1. How do I change my
window manager to XFCE?
Paul Prawdzik

2. In your slackware box, open terminal

3. Type the command “xwmconfig”, you should see this screen
pop up. Scroll down to “xinitrc.xfce” and click enter.

4. Reboot your slackware box and click the blue arrow and
select Xfce and log in.

5. You have changed your window manager to XFCE.