I'm no guru, but here are a couple things to look at:
Inspect the belt. If it is gone, and you drove without it you may have some big problems in your future. Did the engine overheat after the jump? Did the power steering work or was it very difficult to steer?
My guesses:
You lost your belt.
The alternator is toast and it seized.
Idler pulley. (In my experience, Ford idler pulleys like to cause problems in 75K+ cars)
Others, please comment. My intent is to stimulate more discussion and I could be way off base here.
-Khufu01
