Need Help ID'ing Adjusters

Hi all

Please see my post here first
http://www.short-media.com/forum/sho...&postcount=664

In addition to those mentioned in that post, I just noticed 3 other adjusters.
These are located on a thing that resembles a cars coil. It even has a wire running from it to the top of the CRT that looks a little like a sparkplug wire. I don't know any better way to describe it.
Anyway, there is a Focus screw, one in the middle that has noting wrote on it and the last one is on the bottom and it says Green. These adjuster screws are inline vertically:
Focus
No name
Green.

I don't want to just start turning these thing, not knowing what they all are. I do have a plastic screwdriver and I am very careful to not touch a thing. I would love to be able to lower the brightness and I feel maybe one of these adjusters will do (as mentioned in another guys post). Please help.
Thanks