KEN LANGDON has worked for many major computer companies world-wide, including Hewlett Packard and DEC, and is presently the non-executive chairman for SofTools, a supplier of electronic Integrated Support Systems, and Glenhurst Ltd, an air conditioning supplier and contractor. Ken is a prolific writer whose books include "Key Accounts are Different" and a contribution to the "The FT Handbook of Management," as well as several books in Capstone's Smart and Express Exec and 100 Greatest Ideas series.