G-code interpreter for 4 axis router (no replies)

Hi!
Like first, sorry for my bad english.
I have problem.
I have 3 axis cnc with nema 23 steper motor, and i must add 4-th axis.
Electronic is broken, and I want now drive router with arduino.
I have arduino due , and software arduino 1.5.5

I tried instal files from reprap but always I have errors.

Maybe some have modifed code for this.
Thanks.