Did you get my PM Wilfy? Can't speak for dedicated cnc stuff but any design program like corel or illustrator will produce vector files which can be exported as a dxf file. A cam program such as cambam or lazycam to produce the gcode & then mach3 to run the g code which the machine understands. Depends what you want to do really, some software is really easy to use other software is more difficult to learn but is far more versatile. Jonathan says there is a free version of cambam & lazycam is free from arcsoft but don't think there is that much support for it so you may be on your own learning how to use it.