just in; need help

[coposemanuel]

I would appreciate if someone could give me some answers related to a post on this site [SOFTWARE for PHOTO ENGRAVE WITH DIAMOND POINT TOOL, read post first.
-I intend to buy a CNC Engraver from China [http://www.sudiao.com/en/productview.asp?id=66] but i do not know what VIBRO POINT DIAMOND refers to: is it a function of the cnc engraving machine or is a tool that could be mounted on any cnc engraver (mine for example)?
-what programs should i use to engrave photo image, (portraits on granite tombstone) with cnc engraver vibro point diamond tool?
i realy need some help.

[Litografa]

Do you need equipment for MILLING or just ENGRAVING on stone?