NVIDIA(0) Failure to construct a valid mode list: no modes remaining
 

I am a newbie using Mandrake 10. I tried to install the NVIDIA drivers but got the error message (EE) Failed to initialize LX extension (NVIDIA XFree 86 driver not found)
so I decided to make my XF86Config-4 file look like the example given by NVIDIA. Maybe this made it worse, cause now I'm getting
(EE) NVIDIA(0) Failure to construct a valid mode list: no modes remaining
(EE) NVIDIA(0) ***Aborting***
(EE) NVIDIA(0) Screens found, but none have a usable configuration
Is it best to restore the old XF86Config-4 file or did I just make an error?
I hope someone can help me.