Install the screensaver:

Short version:
./configure
make
make install

Long version:

First run the configure script
./configure
You may have to use ./configure --prefix=/usr depending on your installation.
If you have it, you can run "kde-config --prefix" to find out the prefix.

If everything went okey, compile the source
make
If that generated some errors, mail the author (erre@telia.com) and
attach output and system configuration. If not, continue with installation

make install
This will copy the binary (kountdown) to $prefix/bin and the desktop link
(kountdown.desktop) to $(kde_appsdir)/System/ScreenSavers/
