Actually having the same problem, made a new topic in http://www.knoppix.net/forum/viewtop...?p=28849#28849 because of new problem after installing first driver.

First you will have to install the HSF modem driver and after that you will have to install the Riptide drivers for audio functionality.

The first one (HSF) is precompiled in a .DEB Debian package; you should download and install it (if you use Mozilla, you can use "open with the default application")

The seconf one (RIPTIDE) is in a .tar.gz compressed file. It's source code; so, you'll need to uncompress the file to an empty directory (you can use Konqueror filemanager and then selecting "extract here", i.e., or by command line "tar xvzf (name_of_the_file)")

After that, read the INSTALL or README files in order to make the installation (I think it's "make" then "make install" and then you can run "ripconfig" in order to configure the sound drivers)

If you have the same problem that I have (very likely), then you will have an error running ripconfig; you should go to the topic that I've created (http://www.knoppix.net/forum/viewtop...?p=28849#28849) for new hints.

Greetings,
Jose @ Caracas, Vzla.