Ubuntu 10.04 permanent fix grub2 parameter for intel i8xx video card boot into a blank screen...

I had major problems installing Ubuntu 10.04 onto my HP nx5000. It would consistently boot to a blank screen because, I think, of a conflict with the i855GM card. I followed several discussions that finally allowed me to install Ubuntu, boot, and type this message.

One discussion lead to this page -> https://wiki.ubuntu.com/X/Bugs/Lucidi8xxFreezes
...but I simply followed these instructions from that wiki to boot Ubuntu from the new installation:
1) Hold down Shift while booting to enter the GRUB menu.
2) Press 'e' to edit.
3) Add "i915.modeset=1" after "quiet splash".
4) Ctrl+x to boot.

Now, the last thing I need to do is to make this fix permanent. From the wiki:
"If adding "i915.modeset=1" to your boot parameters allows you to boot successfully, you then need to enter the command above into a terminal to make the changes permanent."

Can someone please tell me what I need to do or where to find instructions? Do I just add "i915.modeset=1" somewhere? Or are these instructions referring to a different command? What's a "terminal" and how do I add what I need to add to it?

This is my introduction to Ubuntu so I'm not familiar with it at all...

Thanks in advance!

-C