I have a new series of training videos up loaded to youtube. These cover all the basic steps for creating and modifying vector art for use with a plasma table. If you have never tried inkscape I would highly recommend it as it is a excellent vector drawing program that doesn't cost anything.
video 1 http://youtu.be/HCy5tFA4m1A
video 2 http://youtu.be/1T6Msznn_lY
video 3 http://youtu.be/vpYHZatLPcA
video 4 http://youtu.be/sNIf0w1EX4k
video 5 http://youtu.be/GR4H5LBgOAs
Arclight Dynamics
Arclightcnc.com
866-222-2154