Boot like this:

boot: knoppix 2

run cfdisk, make a new swap partition yourself, then startx or just reboot the Knoppix disc. Knoppix should recognize the swap partition and use it.

If you can't boot knoppix 2 then....

Get Tom's root boot.
Boot with it. Run fdisk, make your own swap partition and format it for swap. Then reboot with Knoppix. That should work.