Former Enron chief executives Ken Lay and Jeffrey Skilling <A HREF="http://news.zdnet.com/2100-9595_22-6076987.html?tag=zdnn.alert">were found guilty</A> on Thursday of lying about their company's crumbling finances in one of the biggest U.S. business scandals and could face years in prison. The jury verdict in a trial that began January 30 capped a four-year-long government effort to get those responsible for a corporate collapse that cost investors billions of dollars, wiped out thousands of jobs and sent shockwaves through Wall Street and Washington.