登录密码会明文显示而不是*******

刚装ubuntu11.10 不久，想弄个3d桌面，但设置显卡时出现这段英语，You do not appear to be using the NVIDIA X driver. Please edit your X configuration file (just run `nvidia-xconfig` as root), and restart the X server.看不懂是什么意思，搞了很久也没整好，各位好心人帮一下忙，小弟，先谢了。