ad 1) This tool is only within the DVD-version of Knoppix. But you can open a terminal (3. icon from left) and type
Code:
su
aptitude update
aptitude install gnome-search-tool
But this tool is gone away after shutdown of the CD-session. I suggest to do a Flash disk Install first and after this download gnome-search-tool within your flash disk installation to an USB stick. For CD version of Knoppix you need at least a 1GB USB stick, better a 4GB stick

aad 2) Have a look at the link I told you about how to handle with ERUNT and the files you'll get within the ERDNT folder.