Nvidia driver Fail

[jags84]

Hi, when i go to enable the video card in System>Administration>Hardware Drivers
it gave me this error

I have a Nvidia GeForce 6200 256Mb

W: Failed to fetch http://security.ubuntu.com/ubuntu/po...18.41_i386.deb
404 Not Found

i see in this post something similar but it doesn't fix my problem
http://ubuntuforums.org/archive/index.php/t-866893.html

any help?

[jags84]

Done, just

sudo apt-get update