First, this is a bad idea. Let me just get that out at the very beginning. Unless you purchased this property as an investment property (which is to say, you haven't and never intended to live there), you're going to have a real mess of problems. Renting out a house is not a good alternative when selling isn't an option.
Second, you can't rent the house for more than the market value of similar rentals in the area that have already rented. The cost of maintenance, mortgage, insurance (you know your homeowners policy probably won't cover the rental, right?), utility company deposits (landlords normally have to pay them!), and painting and cleaning between tenants are all quite expensive, but unfortunately you almost certainly won't be able to cover all those expenses with your rent. So this project will operate at a loss, probably for the first few years.
Third, you don't need a real estate agent. There are plenty of how-to books out there that cover most of what you'll need to know, and there are countless websites with tricks, tips, and legal guidance. And that's good, because most real estate agents are not "rental experts," despite their claims (listing rental properties when the sales market tanks is not the same as being an expert in the rental market).
So my advice? Don't do it. And if you're going to ignore my advice, don't do it with a real estate agent. Google "Land O' Lakes Management Company" and find a reputable management company to handle all of it for you (they'll charge you 6-10% a month plus a month's rent to find a tenant), and be ready to abandon your emotional attachment to the property.
Really, I wish you luck. This sort of thing isn't easy to do.