I know there are ways to control the speed of running motors but, not for servos. Can you help me? thanks much.
The specific servo is the only thing that can determine the fastest speed that it can move, say from 0-180 degrees. Some servos are faster then others and the amount of physical load on the servo can also effect it's maximum speed of movement. Servo speed is a specification often listed in a servo's datasheet.
What you can do under Arduino software control is slow down the servos speed, but only by making smaller moves with each analogWrite command and/or adding delays between analogWrite commands.
Lefty