Xavier USB adapter info

Hello Jerome, I am currently building a cnc foam cutter; and I am using the Hobby CNC Pro kit w/heat control Iam also using your software Jedicut. Question; Am I going to Have to use the Xavier USB adapter? My computer does not have a paralell printer port; it has USB port only: I also have A pci slot to add a paralell port if needed. If so where and how do I purchase the adapter? I am running windows XP. Also will any Usb to paralell printer port cable work? please Help Thank you!!!!!!!!!!!!!!!!!!!!!!!!!!!! Mike