Thank you for the help!!

The language is Italian. Office is the 2010 version and the file extension is .doc. The first version of document is not generated by me, then I don't know the first version of Office used (it's possible with 2003 version).
Yes the problem is about the displayed width, that I've fixed, for the new generated documents, with the parameter showed in the screenshot.
I think that the print width is the same on all computers, but i need to resolve the visualization problem, because usually i generate the document on a laptop with a larger resolution and after these documents are opened on other three laptops with different (lesser than mine) resolution (but with space to display the correct width).
I've done this putting to a fixed value the columns width (like showed before), but now the problem is with the existent documents.
If you have understood my problem there is a way to avoid manual correction? I don't know...like a VBA script or other ways?