Hi rshaw,
Thanks for the solution. I logged in as root, created a folder in usr/X11R6/lib/X11/fonts/truetype named
unpacked_fonts to avoid confusion (as I am easily confused), and downloaded a .zip file containing the desired .ttf file to that newly created folder.
Afterwards, I simply opened the .zip file and saved the .ttf file to the location usr/X11R6/lib/X11/fonts/truetype.
The font I downloaded now appears in OOo under the root login, and under my user account logins as well. Haven't checked The GIMP yet.
Thanks again for your advice. Linux and the Linux community are great. Hopefully, someday I'll be knowledgeable enough to answer questions, too.
Best regards,
Tina