I were following the address from Coldfish on How to set nomodeset, but I don't know how to "save" the changes made to the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"

I hit CTRL+O to save and get File Name to write: /etc/default/grub AND typed sudo update-grub AND hit ENTER.

After that, I open another Terminal an type: sudo update-grub (ask me for password) and them I got this:

joseluis@ubuntu:~$ sudo update-grub
[sudo] password for joseluis: 
Generating grub.cfg ...
cat: /boot/grub/video.lst: No such file or directory
Found linux image: /boot/vmlinuz-2.6.38-12-generic
Found initrd image: /boot/initrd.img-2.6.38-12-generic
Found linux image: /boot/vmlinuz-2.6.38-8-generic
Found initrd image: /boot/initrd.img-2.6.38-8-generic
Found Windows 7 (loader) on /dev/sda1
Found Ubuntu 10.04 LTS (10.04) on /dev/sda6
done
joseluis@ubuntu:~$ 

SO: Were I'm? Were is my direction now?

Thanks for the help.