redgreen not working

Could not get this bugger to work at all.
After much fiddling around - and a lot of googling, the penultimate comment on here solved it.
There was a lot of talk on sites about edit the .autotest file - but, er, on my install I had three .autotest files - which one to edit?
As it turns out, none of them. I had to make my own in the ~/ directory.

I am using SSH to remote into a RHEL5 box.
did a
$> vim ~/.autotest

got the usual vim type new file thing
and then typed

require 'redgreen/autotest'

yes - that way round, and NOT require 'autotest/redgreen'.
Save that (remembering not to hit Apple-S which sends Vim into a right old state) and at long last glorious living technicolour. Well, red and green at least - oh and amber too.
Second step on the journey of a thousand miles.

Having spent some time trawling around and looking at testing, and following the advice of the ever sagacious Ryan Bates, I think it is worth investing the time and effort in getting a solid test environment built.
To that end it looks like the following
Mocha
RSpec
Cucumber
Webrat
FactoryGirl.
It worries me that that is five packages to try and get working. However, I have got the Unit tests working pretty well so far using fixtures etc.
I think I am going to try and use FactoryGirl rather than fixtures. My brief foray into fixtures was not a happy one. They seem very brittle.