my system config is
processor:quad core 2.6ghz
mother board :dg45id
ram:4gb
graphic card :nvidia 9400gt

i tried to install nvidia drivers in many ways .but i was getting so many errors how to install without getting errors..
and i also want enable the desktop effects..
when i was installing compiz desktop effects it gives an error command not found........
please any one help.............................
i was dog tired..