Dear Colleen:
After you configure the xscreensaver to run in KDE (see instructions below), log out of KDE and log back in. You will now see a splash screen for XScreensaver. Click on Settings and inside uncheck this ugly splash screen so you won't have to see it every time you log into KDE.
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I had the exact same problem. Searched on Google and found the answer:
Here is the URL with full instructions. They work perfectly.
http://www.perturb.org/display/entry/591/
Benjamin