OK this is the long story short:
I tried installing following the indications by Nvidia at:
failed (installation gave correct output on terminal , but after inputing session account name and password... black screen of hell).
Then tried envyng. Followed his adice:
Now I am stuck and feel like sht. Can anyone help me? ubuntuforums.org did not. IRC freenode.net #ubunto did not. Will you fail to help too. Yes I already goooooooogled and nothing seems to help.
Thanks in advance.