i have a 5 axis router/engraver and I'm looking for g-code that will allow me to engrave something on a cylinder. or if i have to adjust font size and mill a flat on the cylinder and engrave on that? thanks.

P.S. I'm well experienced with mill and lathe BUT I'm a complete newbie to cnc anything.  Again thanks

Philippians 4:13

This will allow you to do it;  http://www.scorchworks.com/Gcoderipper/gcoderipper.html

Tweakie.