Thanks - I downloaded the .dev and noticed that the download created a "Download" directory with an uppercase D. Doing the Sudo dkpg command gave dependency errors as expected.

I changed back to the /home/knoppix directory and tried the following:

apt-get install python python-gtk2 python-glade2 libgtk2.0-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package python-glade2 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'python-glade2' has no installation candidate
E: Unable to locate package libgtk2.0-dev
E: Couldn't find any package by regex 'libgtk2.0-dev'

= = =
I also tried:

apt-get install python-gnome2-extras
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package python-gnome2-extras is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'python-gnome2-extras' has no installation candidate

= = = =
Started synaptic package manager again and received the following message:
"You have 1 broken package on your system! Use the "Broken" filter to locate it." - I didn't get that message before when I entered the synaptic package manager, so the good news is that I'm having some effect.

The Broken filter shows the keepnote package with a red left box.

Suggestions? - Thanks.