[lifer]

This is a MAJOR flaw with Pro Tools.
You have to have a HUI compatable control surface or purchase one of the controllers from Digidesign.
I am dying to build a custom controller of my own since there is a huge gap between the functionality and cost of current surfaces.
Sadly unless Avid change their policy or you know a reverse engineer bod, you are stuck.
If you just want one fader i suggest you purchase either Frontier Designs Alphatrack or a Presonus Faderport and use their HUI mode.