Try this software out, it lets you convert an image to g-code!
Use the windows paintbrush program to make the text, save as an image, then engrave it!
Its shareware, good for 30days
Quote from website:
"PS: IMAGE TO G-CODE GRAPHICS INTERFACE IS FREE. (You do not need to register to keep the graphics interface utilities. Only if you want to use the G-Code converter utilities you are required to register)."
It's a nice little program, easy as pie to use too!