Why not just learn Creo 6!
Creo 3 is at least 5 years old.
There may be a limitation of how long the trial software is valid for.
You cannot mix commercial and trail software files.
Hi,
if you have license file containing Creo 6.0 license, then you can select it during Creo 3.0 installation. Installer creates parametric.psf file referencing license file ... and Creo 3.0 will start seamlessly.
@Ketan_Lalcheta License files are backward compatible. If you have license file for latest version, the same license file can be used for older version of the application. However if you have academic/student license (learning purpose) then the same can not be used for commercial purpose. That means if you create files using Learning license, you can not open them in commercial licensed Creo.