How do I find a investor that will invest a million dollars?

I have a great idea that I know will work.

What would the return for the investors have to be for them to be interested

To the person who replied before this: why would having a great idea mean that you also have the capital required to launch that idea? People get investors all the time.

To the guy who posed the question: write a business plan. You can get help on how to do this online. Your city or one near you may have a business group that'll also help you.

Once you have this plan it will tell investors what they can expect to get in return for their investment.

Chances are, unless your idea is REALLY good, you're not going to get someone to just hand over a million bucks. But if you get a few investors, and get the bank involved, you may be able to raise it.

Great! Then you'll have no trouble using your own resources instead of someone else's. Right?

On top of a business plan, make sure you have good, realistic forecasts for your financials. Investors are particularly keen about the cashflow forecast because it determines how fast they'll be able to get a return on their investment. Also, don't fabricate the numbers of your forecasts.

Astute investors can see right through numbers and can tell if numbers are fabricated to make a presentation/request for funds look good. Do your homework....Good money always follows a good business system/strategy.

One thing you could do is go to the Small Business Administration website. There you can find their list of SBIC, Small Business Investment Companies, for your part of the country (assuming you are in the US, otherwise, sorry, I haven't a clue). Make contacts with one of them, make your pitch, ask for feedback if they say no, refine your program and presentation, then contact another. Another option, not necessarily excluding the other but possibly something to do while preparing your business plan and presentation, is the group SCORE, which the SBA sponsors. They are retired businessmen who can be consulted for advice. Good luck.

Have you ever started a $100,000.00 USD company?

You need to have a little clearer idea of what you expect to do with the money, e.g. start a company, license the idea, prototype it, etc. A good book for startups is "The Art of the Start" by Guy Kawasaki.