Please help noob get Gcode from Eagle

Hi i'm new to this group and despratly seeking anyone who knows how to
get from a *.brd file in Eagle to a Gcode file that will allow me to
mill a PCB in Mach2.

I have had tons of pointers in other groups to *.ulp files and and ive
tried to read the Eagle help files (not helpfull) with no success.

What i want is a step by step instruction in detail how to do it.
Does any one realy know ??????????.
I await your knowlege :-)
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Bri