By Kevin Featherly Newsbytes - Think of it as a kind of domestic foreign-trade mission. A group of as many as 52 Minnesota high-tech start-ups, many of them from the dot-com and telecommunications fields, are planning a field trip to Silicon Valley en masse, with a plan to put themselves in the faces of venture capitalists whose money might help their start-ups turn the corner to business success in the New Economy.    Story...