A necessary thing to have is a great idea about what to make or sell. That's lacking from your post. But the perfect reason, of course, is that you don't want to disclose it yet, because others might use it.
Once you have that great idea, go to the links I mentioned in http://forums.cnet.com/5208-10150_102-0.html?messageID=3195050#3195050
I want to make a company and I want it to be famous. How do I start? If people help me and this company actually gets going somewhere, people who invest money into it will be presidents of company to like a co-founder. Thanks