Quote - but could u introduce you pc ?

I'm not sure what you are asking. Do you want to know the specs of my PC?

Quote - and preta3d is free?

Prêt-à-3D is the name of my company.

Cheers.

Paolo

https://www.preta3d.com
FB: https://www.facebook.com/RealityPlugIn
Tw: @preta3d
G+: https://plus.google.com/106625816153304163119
The Reality Gallery: https://reality-plug-in.deviantart.com