Quote Originally Posted by eco2geek
Does that mean your new computer came without an operating system? If that's correct, is the hard drive in it formatted?
Yes. I wanted to save ~$350, which was about a full hardware price. So I formatted disks for Linux, using standard Dell installation process, but turned off computer, when was asked to insert Red Hat Enterprise Linux CD to install it. I saw the formatting process has been completed.

If your network card is connected to a router, all you might have to do to get it working is go to the Knoppix menu and select "Network/Internet > Network card configuration" and follow the prompts (one can hope!).
That is exactly, what I did. But I got an error message, saying, there is no card. The possible reason may be that this was an onboard NIC.

Problem with that scenario is, you can't take the Knoppix 3.4 CD out to burn Knoppix 3.7 if you booted off the CD.
Oh, my G-d, I hoped it was just an image, which can be transfered one to one to CD and the result will be bootable CD. Thank you for invaluable advice

Merry Christmas!

[Edit] 1. (Rereadind your answer): Do you mean that the problem with my scenario is that the CD device is busy with OS? If yes, it is not the problem in my case, because I have 2 CD devices on other computer and I can use it for burning. All restrictions still apply.
2. How can I tell K3B, that I want to copy from USB hard drive device, not from CD?
TIA