The revolution is over: the computer has captured the jewelry store with dramatic effects. Thousands of jewelers have become more efficient, gaining a tighter grasp on operations and sales and – in consequence – becoming more profitable."It has improved our lives immensely," says Allan Herrud of Langdon, S.D., whose watch repair business doubled thanks to computerization. "I don't think we could get along without it now."But while computers help many jewelers as a bookkeeper, merchandiser and analyst, their full potential as a profit-builder – especially with jewelry design and networking – has yet to be realized.These are some findings of a JCK poll of hundreds of jewelers nationwide. Full results of the poll are detailed in this special report, "The Real Computer Payoff: More Profit."The report also looks at how some jewelers use their computers for daily tasks such as inventor