I've posted instructions for setting up a seismogram as a screen saver:
http://www.jclahr.com/science/psn/as1/screensaver/index.html
This can be expanded to include additional stations by adding wget
lines to the batch file.
In fact, the image need not be a seismogram, but what could be better
than a current seismogram???
Let me know if this works, or doesn't work, for you.
Cheers,
John