Outside of minor adjustments to the limit screws, I don't have much experience with derailleur adjustment. After replacing the housing and cables, I'm in need of a bit of assistance with indexing after screwing up the set tension.

I've attempted to follow this video http://www.youtube.com/watch?v=92Cu_jneQFw, but I'm getting no movement from the rear derailleur.

The derailleur is currently fixed at the smallest cog with both barrel adjusters turned to provide the most slack. After adjusting the h limit screw and tightening the cable, I get no movement from the derailleur when I attempt to down shift. Anyone have an idea what the deal might be?