Thanks jerry1423, The catia 5 direct translator is only available if it's part of the licence bundle.
I have received STEP files from my contact in order that i can import into NX11, (with varying levels of success).
The files that we were receiving originally were dumb STEP files, just containing a lump of 3D data with no Attributes/properties/assembly, from which i was having to copy and paste the various bodies into new components and try and find name/number from other sources. I suggested that my contact use the Nested Step option with external references... NX -> File -> Export -> Step -> Export to STEP Options -> Advanced Tab -> Check on External references, and select Nested.
This at lest got me a package of step files (Assy and individual components), but all files came with just the part name, (no part number or revision).
Basically i want to be able to go back to my contact with a robust export process that will get me the information embedded that i need when importing at my end without having to rely upon other information sources that may not be updated in line with CAD.
Thanks again for your help.