Hello everyone

I just purchased a Makeblock XY drawing plotter and I need a CAM software to create simple 2D G-Code from 2D cad drawings so I can draw them out on the plotter. I have Rhino 4.0 for creating CAD drawings but I don't want to buy Rhinocam after already paying $900 Rhino. Can anyone recomend a decent free to use CAM software that I could import a 2D drawing into and then generate G-Code?

Christine