I checked it.
It is ALMOST what I wanted.
The only problem is that now the "integrated" NX is working on a different version than this one.
The dataset is still checked out on TC, and the file is on the work folder defined on TC options.
But I can still open the file from TC with the "open in NX" button.
Is there any way to define it also in NX that it will point to the same file?
There's also a problem that if I checkout the NX dataset, and then I want to rename the named-references, it doesn't let me to check it in, saying it can't find the file.
I'm afraid that on a daily basis this switch could be quite harmful, and probably that's why the IT managers defined this feature off as default.
BUT this seems like we're on the way

Could you please try to help us little more with this?
Thank you