- Upload SVG to one of the free online tools like http://www.makercam.com/
- Define tools to be used and create profile.
- Export G-Code
- Open Mach 4 for silulation
- Pres Enable, Cycle Staft Gcode
You can propare g-code for cnc in ESTLCAM http://www.estlcam.com/

Another simulator tool is CAMotics http://camotics.org/
