When you--re 50 or 60 years old, the job market is a combat zone, no matter what your skills or experience. Battle-scarred veterans report that they're passed over time and again for jobs which they are eminently qualified for. Successful applicants, often with fewer skills and almost always with far less experience, do seem to have one significant thing in common-they are younger, sometimes painfully younger. There was a time, not that long ago,...