I don't own CorelDraw (nor do I want to pay for more software right now, unless necessary). I do own Illustrator and was able to draw something and export as a DXF into Sheetcam with no problems.

However, I'll normally want to include this file within a part - so once you export the DXF from Illustrator or Corel, can you then import it into a CAD software and resize it as needed?