Hello there OMEGA DOOM!
I've got your e-mail, thanks
. Well, to install Knoppix into the HD, take a look here:
You should be able to save anything to the HD with the Live disk as long as you have you windows partitions mounted and that it's in FAT32.
There's always a risk when playing around with partitions and boot loaders. I never had any problems with Linux (the same could not be said about FreeBSD though).
The new version of Knoppix seems better. It comes with a newer kernel, thus support for writing into NTFS. It also can boot from some (not many) USB-CDRoms. It's not the same stable (yet) nor is 2.6.x kernel series (yet). The rest, is not much different: If you have Knoppix installed, it means that you have Debian... so just apt-get <whatever your need> and you get the newest version. E.g:
apt-get upgrade gaim
and that will install/upgrade to the newest gaim.
About Fedora and the updates, it's possible. When you run update in Linux, it will update _all_ the programs, since a small one as Midnight Commander up to security programs. I'd recommend you upgrading _only_ the security programs and say, upgrade XChat, if you need a new function present only in a newer version
I think that's it!