Lots of people see extremely intent on forcing a Live CD to install, when for much less effort thay can instead get a stable install of a system intended for hard disk (and learn a bit in the process). As long as you have a high speed Internet connection I suggest going to debian.org and getting the latest net-install cd of the Testing version (go here and pick the i386 image from the top line of downloads). ( There are other discs to get if you don't have Internet access on the target system). Testing/Etch is much newer than Stable/Sarge and in spite of the names it is pretty stable (more so than Knoppix, since Knoppix contains much of the Testing code but without any of the fixes since it was added to Knoppix). This is about a 100 meg download and can be burnt to a CDRW if you don't want to commit to anything long term. Install Debian from that and it will pull the rest of what it needs over the Internet (be sure to select the "desktop install" if you want a GUI, although you could even install that later). Then you can strt using apt-get to install exactly the software that you want.

As I say, I don't know why you like Knoppix/Debian more than Fedora but that's a personal choice and there are many Linux distro to select from for reasons like this. But I know of no good reason to perfer Knoppox over Debian when installing to a hard disk, and a lot of reason to go for Debian, since Knoppix has so many problems in this mode and wasn't really intended for hard disk installs.