Depends on your down payment and other closing costs associated with it. every situation is different. Contact a mortgage broker could answer that based on your financial situation.
Your Realtor and Lender can help you with this. Many sellers are willing to pay 3% of the sale price of your closing costs, too.
I can highly recommend Wells Fargo and http://www.KristineBredeau.com with HomeBanc.
Hope this helps