Rudder control & front gear

From: (Wayne Dockery)
Organization: The Pipeline
Date:         20 Apr 95 01:51:46 
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Is a commercial aircraft (e.g., B747), I understand the
plane is controlled by the rudder for 'yaw'.  However,
once on the ground does the pilot have to make some
change to steer the craft with the nose gear vs. the
rudder?  In other words, are the rudder pedals also
used to steer the nose gear?

I a great fan of aeroplanes and flying, but I'm not in the
airline industry, just a curious passenger-type.