The model I am using is a 20X4 LCD (LK204-25) w/ keypad input
http://www.matrixorbital.com/products/lk204-25.htm
I bought 3 of them on ebay for about $100. I am using one and the other 2 I sold on ebay for $60 a piece (i basically got it free)
Since I was very happy with the transaction, I bought from
www.eio.com another LCD...Seiko L2014 20X4 which is backlit and factory inversed for $15. From then I just disassembled and desoldered the LCD in the matrix orbital and replaced with the seiko...and what you get is an inversed matrix-orbital LCD!
As far as software goes there are a bunch out there... my favorite is markus zhender winamp plugin ( which is what I use) there is also one from
www.borderfield.com which you can display fan speed, temperatures, voltage, ip address, and a whole bunch of other things...
that's it for now...i'm tired.... i should be a moderator with the amount of typing i do on this bb. (hint hint)
To interface it...read the manual. And don't use 12V or you will fry the LCD.... ( one of the guys I sold it to did just that thinking it was the wide voltage model)