apt-get update
to get updated packages since the knoppix distribution you installed was created.
apt-get install eagle
apt-get install openoffice.org
(is built into newer Knoppix distributions)
apt-get install pstoedit
apt-get install qcad
apt-get install python
apt-get install python-imaging
apt-get install python-visual
apt-get install python-numarray
apt-get install python-scipy
apt-get install python-serial
apt-get install python-doc
apt-get install python-examples
apt-get install python-tk
apt-get install python-gnuplot
apt-get install python-opengl
apt-get install python-pygame