With the previous story, I wanted a screen capture of my Gmail inbox. My 'Print Screen' key on the Acer Aspire One wasn't working.
To fix this, first I opened up the Synaptic Package Manager and made sure 'xfce4-screenshooter' was installed.
I then opened up the 'Keyboard' dialog box under 'Settings' on the menu. Once there, I selected 'Application Shortcuts' and then clicked the '+ Add' button. I typed 'xfce4-screenshooter' In the open 'Command:' box. After clicking 'OK' I touched my 'Print Screen' button, which assigned the command to that button.
I love hunting down, figuring out and then fixing these kind of things. It keeps my mind supple.