Shimano GS200 rear derailer adjusting

Since 2001, over 90,000 cyclist's have joined Cycling Forums to discuss topics from general cycling to equipment, training, racing and travel or vacation destinations (especially in europe during the tour de france). We also feature an great deals in our online store, 100's of articles, classifieds and product reviews.

I cannot get my rear derailer to shift one gear at a time with one click of the rotary shifter. Can someone help with the adjustment procedure?
Thanks

click here (http://www.youtube.com/watch?v=coI1T2XYkok&feature=related) (on right side more similar videos)