Cowski
The problem was resolved.
a)I opened the file in inches
b)I applied file>export>parasolid
c)Save with another name (*.x_t)
d)Into the file in millimeters, file>import>parasolid>select file>ok
e)The part (inches) appears in millimeters into the file directly
Thanks a lot for your comments
Tom
NX 8.0.0.25 64bit Windows 7 Enterprise