You were looking at the monitor port not a serial port. Be careful choosing one from Radio Shack, not all of them seem to work with FAST and only a few work with the XFI.
Thanks Cal. You're correct, I was looking at the wrong port. Yes, that is the monitor port on the laptop. It was the closest in appearance to the port I thought I wanted. Wrong!
I saw this after I had purchased the serial to USB cable. Fortunately it does work with my classic FAST