I'm having some trouble getting 1 to run on external power.
Here's my suggestion then:
1- Put DuaneB's multi servo sketch aside for now.
2- Reload sweep, which I think u said was working before?
3- Carefully check the wiring* of the one servo, your Fritzing pic showed you had the red and black confused. Keep the Arduino powered from the PC...
4- Run sweep to verify that the servo runs from external power.
5- Then and only then, edit sweep along the lines of my suggestion many posts back, to have a second servo ("myOtherServo" for instance) on another pin and run that new sketch to verify two servos
Then we'll talk some more...
* wiring is battery +ve to servo red, -ve to servo black and also Arduino ground, yellow / orange to Arduino pin to which servo is attached in sketch. Check the voltage is what the servo needs, probably 4.8 to 6, not the 9 you were using