After all that time to download your "KNOPPIX_V3.6-2004-08-16-DE.iso" file, let me inform you that perhaps you really wanted the "KNOPPIX_V3.6-2004-08-16-EN.iso" one.
The difference is DE is the German version, and EN is the English version.
Or you could have gotten v3.7, as in "KNOPPIX_V3.7-2004-12-08-EN.iso"
The Change Log for v3.7 says:
* V3.7-2004-12-08
- Lots and lots of package updates
- Kernel 2.4.27 + 2.6.9 (w/ ACPI)
- KDE update: 3.3.1 from Debian/unstable
- FreeNX 0.2.5 (Fabian Franz)
- Java security update (1.4.2_06)
- added a few graphics cards entries
- added menu entry for SAMBA-browsing
- isdntool-knoppix for text+GUI based ISDN configuration (will replace isdn-config soon)
- removed some docs to keep iso image size down (this took awfully long)