Fifty million home-based businesses will be in operation by 1997, according to Link Resource’s National Work-at Home Survey. All around the country, people who want more control over their lives are starting home businesses In New Orleans, Rick Hart’s home based cajun Cargo ships seafood nation wide. In Palatine, Illinois, Stephaine Heavey works from home designing and selling original patterns for fabric dolls. And in Dallas, Lisa McElya published the Dallas Party & Event Planners Guidebook from the entire first floor of her two-story home. These three people are living the new American dream of owning a business, but avoiding the high overhead and start-up costs of a commercial location. If the idea of working from home is appealing, but you don’t know where to begin, here is a step-by-step guide. STEP #1 DECIDE WHAT PART OF THE HOUSE TO USE Select an area away from family activity. The perfect space is a separate room (or perhaps the garage), but any area will do, if it can hold all the business supplies and equipment, and also provide enough work space for desks, tables, or counters. STEP #2 DETERMINE HOW MUCH TIME YOU CAN SPEND ON THE BUSINESS Many people start…