You can't just surrender your home to the bank... If you have equity in the try to sell it. If you owe more than the home is worth you can try a short sale. Otherwise the home will go to foreclosure. Contact a Realtor that handles short sales and is throughly familiar with them.
How many payments are you behind? Have you been serviced by the Sheriff...
If you would like more information or my book on short selling your home please visit my website www.poconohomesforsale.com