What you want to know is this: "Is my business idea feasible?" The best way to begin to answer that question is with some research.
* Who will buy my product or service and what are they willing to pay?
* What does the competition look like?
* How can I attract customers?
* How will your firm be different from the competition, and how will it stay that way?
* What are your abilities to produce this product or service?
If you believe there is a likelihood the business has a sufficient market, the next step is to carefully design how you'll put that business together and launch it. Doing tis runs the gamut from very complicated and formal planning to "trial and error" strategies. For a complete list of the various considerations in launching a business, see the resources at: href="http://www.sba.gov/smallbusinessplanner/index.html"> U.S. Small Business Administration's Small Business Planner.