I have downloaded Knoppix and the CD has been burnt sucessfully. I cannot however boot from the CD, I have the latest BIOS for my machine but this will not allow me to boot from a CD. I have heard of a floppy disk that will tell the computer to boot from CD (or something like that). Does anyone know how to create one of these?

Any help would be greatly appriciated. I'm running the latest version by the way.