I am very happy with what you tell me, I would like to know more of it... what kind of firms are those that require this type of product? which has the beginning of your working experience been in this sector? I would like to know if to my age (I am 45 years old) I can be begin (from zero, or almost) a new activity in the graphics 3D. More things I know better I can do my choice. Thanks again Ciao, Luigi.