EMC fixed - Turbo CNC?

Hi all,
Turns out the problem with the EMC install was just the CD I burnt it
on. I guess the burnt image had some problems. It installed fine, but
my laptop isn't too happy with Linux running on it - oh well.
So... let's talk about Turbo CNC - what software can I take a CAD
file (.dxf or equiv) and turn it into G-Code that Turbo CNC will
recognize?
Any help is appreciated,
-Chris Clough