I would have to agree with Ryans response below. Importantly though, why are you looking at lease options. Prices are being held almost artificially low by appraisals eeking up just a tiny bit at a time. Rates probably wont get any better. Have you worked wiht a lender to see if you qualify for a purchase? Or if you arent sure you want to purchase here, maybe just do a straight lease and if its all meant to work out, maybe your landlord will be ready and willing to sell when you are ready to buy, that happens. If you want a rental, I can send you a list from the MLS of available rentals but I wont pretend its the best list. I think craigslist if probably your best resource for looking at rentals. You might also try www.thekittyletter.com a small local print/web site for rentals. Be careful of deals that look too good to be true and always check to make sure the property you rent is not already in default on the mortgage, that can be an unpleasant suprise.
As far as buying goes, if you are considering a lease option, I did one of these when I was pretty young and didnt know too much but didnt have a down payment, you might want to connect with someone who can look at your financial picture and see how far away you are from being able to purchase or maybe you are more ready than you think. Either way, its good to have a plan. I personally sold a home to buyers who used and FHA 3.5% down first and received a quiet second for the 3.5% down payment through a governement assist program. They can make payments on it or not, it is due in full when sold or refinanced. The buyers needed a little money for the deposit and other costs but we even asked the seller to help them with closing costs. They purchased a home for less out of pocket then first and last would have cost them for a comperable home.
Contact me directly through my trulia profile if I can help with any additional inquires or connect you to a lender.