Thanks all for your suggestions.
While Firefox has an extension for "kiosk" mode and KDE has something similar, they both require some thought and configuration. Opera's implementation seems more robust and simple (although it requires payment and registration). Removing the window manager and keyboard are also excellent suggestions.
Thanks to Wesley and Jim for offering to help out.
Cheers, Roy.
-- Roy Britten National Institute of Water and Atmospheric Research P.O. Box 8602, Christchurch, New Zealand P:+64-3-343-7818 F:+64-3-348-5548 http://www.niwa.co.nz
