Eight people from Indiana have been arrested for allegedly stealing computer equipment, TVs and over-the-counter medication from freight trains in the Chicago area and northwest Indiana, officials said today. In addition to the rail thefts, the eight-month investigation also uncovered an auto theft ring that stole at least 18 vehicles and two motorcycles valued at $291,000, said Lake County, Ind., Sheriff John Buncich. In total, authorities have recovered $2.8 million in stolen cargo and automobiles, he said. "These guys really had an operation going," he said.