How do I pay back an investor?

[Mark Smith]

I'm facing a bit of a dilemma:  I found a property that I would love to purchase, however I do not have the cash for a down payment.  I would like to find an investor who would cover the down payment, closing costs, etc.  How do I pay them back?  Do I try to refinance after a year to get cash out and pay them off?  I'm trying to think about how this would work since 1 year doesn't give much time to build up equity, especially enough that I would be able to refinance and get enough cash out to pay off an investor.  Has anyone done this and can offer come advice?  Or does anyone have a different strategy for me to consider?  Thanks!