- I looked to export the UV maps, but I have not succeeded (impossible to select, edit menu empty).
Yet I saw that you had succeeded:
http://www.subsim.com/radioroom/show...&postcount=396
How are you wanting to export the UV maps? If you double click the windows that open with the UV maps you can save them to a file. Is that what you are wanting to do or something else?
I must be a little silly, I double click on any window? I just tried everywhere in every menu, in the middle, up, down, nothing ! 
Questions :
- Is there a way to rotate (shortcuts) from the point of view (on the spot) ?
Not sure what you are asking here.
rotate of the camera axis and not of the world axis 
-For the UV maps will it be possible to load them directly into 3ds Max ?
Once again not sure what you are asking here.
possible backup format .UVW to open them directly in 3DSMax
BigReg/BigRegOne
"For it is as little as possible unhappy, always hitting on the same.
Proverbe Shadock