I've tried the 3-7 pin jumper and that didn't work either.
Another thing I have been having difficulty with, which just started, is that 1 of my machines (windows 7 ultimate) isn't recognizing the COM port the Arduino is emulating. When I load up the IDE, and click on tools, serial port is greyed out. And I cannot for the life of me get the computer to recognize it any more.
This happened after the arduino and wifi shield got wet (water was leaking in through a badly sealed window and the arduino got wet.
I cleaned up the corrosion and dried the parts using some isopropyl alcohol. Put it back together and connect it to my Laptop (MacOS X 10.8.4) and the arduino connects and I can see it with my serial monitor. When I put it on the windows 7 machine, nothing....