I am a member at a DIY workshop called TechShop. They have the AutoCAD and the Vectric software I am using available for all members to use. They also have CNC machines such as the ShopBot, that I will use to actually cut the holes in this faceplate (in another Instructable yet to be done)..
The project used in the Instructable is to be the front panel of a homemade DC power supply.
First you open AutoCAD and your file. Then save it as a .DXF. To do this, click the main pull down at the very top left letter "A" and select "Save As". From the window that pops up select "Other Formats." In the standard windows save dialog box, go to file type drop down menu and select "AutoCAD 2004 DXF". Saving in later versions of AutoCAD does not work with the version of Vectric Cut2D that I have (don't know why).