How to download Knoppix.

Hello everybody.
I was trying to download Knoppix for the purpose of partition my HD, the problem is that I don't know how to create a live CD. I was told to go on-line download the program and transfer it to a CD, then go to BIOS and modify the boot order to CD first and that what I did, but it doesn't work, the machine tries to start from the CD drive but for some reason I don't get any video and after a minute it boots up from the HD. somebody told me to create an image of the ISO file, wich is not the same as creating a music CD, and that there should be an option to make an image of the file to the CD in my software, which I don't see( I use HP Record now). Can somebody help me with this, am I supposed to install any software for my CD drive? or how is it that I create a live CD, please make it as simple as you can, I am not really familiar with the computer world, every time I read the forums I realize how much I have to learn, but with your help I will do it
Thank you everybody for taking the time to help.