nvidia-glx won't install.
install this and try
apt-get install nvidia-driver
if not working add this too
apt-get install nvidia-alternative
I have both packages installed
during install if it ever asks you to configure anything ignore it .
make sure you have these source in your source.list
deb
http://http.kali.org/kali sana main non-free contrib
deb
http://security.kali.org/kali-security sana/updates main contrib non-free