I didn't understand your questions very well. Well, you want to know if you can ceate/modify partitions with knoppix (installe or livecd). Yes, you can. You only need the partitioning program. I don't know where to find the partitioning program, but I use this workaround:

I open a terminal console. There I attemp to launch the hdd installer (sudo knoppix-installer). One of the first steps in this process is to partition the disk, so this script launchs the partitioning program. If you use this program carefully you will be able to create your swap partition. Be very carefull with this program because you could erase information in your hdd

After you partitioned your hdd you can cancel the installation.