Is there a "step and repeat" type function in Adobe Illustrator CS3?

I'm trying to draw a gear (like a machine gear) in Illustrator and I want the little knobs to repeat at equal spacing around the radius of the gear circle. I made the little knobs into a symbol and thought that I could use a "step and repeat" type function similar to the feature in Quark. However,... show more I'm trying to draw a gear (like a machine gear) in Illustrator and I want the little knobs to repeat at equal spacing around the radius of the gear circle.

I made the little knobs into a symbol and thought that I could use a "step and repeat" type function similar to the feature in Quark. However, I am unable to figure out how to control the duplication and spacing of objects in Illustrator.

Anyone have suggestions?
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