Global folder settings in Finder.

I've been customizing my folders using the View Options window in each folder separately, and I was wondering if there was an application or script that would change my view options (font sizes, icon size and spacing, background image, etc) for ALL folders, on a system-wide level.

I know there has to be a way to do it, but every time I try, I only change settings for the parent folder.

Sorta 2 part question, I guess... How do I change the text underneath "Macintosh HD" such as "500GB, 457GB free." I know it's a string that can be changed, but I've forgotten where it's located.