If I can attach this it is the best Matrix Emulator screensaver I have found!~!
I say this as due to I can actually get it to run on my Duallie Monitor system.
So this is about the best I can say.... Hope it is at least kinda what your looking for.
IFMU
*EDIT*
Blasted... its too big... arg... Well if your interested in it, send me a PM with your email addy and Ill send it your way. It has resolution change, it can run on dual monitors (and presuming more, hope to find out soon!~!) You can alter
The device (i.e. you can specify for each video card)
Resolution
Matrix density (0-400)
Highlight percentage (0-100)
Scroller Speed
Flip glyphs horizontal
Flip glyphs vertical
(??~!!~??)
Enable logging
It is a freeware version, and it has an upgrade to it if you purchase it for $2.. wow.. didnt know that.. might have to do that!~!
The link is that it has listed is
http://www.chaossoft.com/
(To my knowledge there is nothing wrong with this site, I personally havent checked it out thoroughly, so surf it with this warning!~!)
Again, hope it helps.
IFMU