OT: Repeater for Sprint Network

Hi All, Please forgive me for the off-topic post. My cell service is so bad at the house I can't hold it in any longer. Does anyone have a recommendation for a repeater of the Sprint network? I'd like a low power omni for the house, and a directional back to the tower. (Or some step-by-step instructions for building one?) I'm less interested in a Femtocell because I have about an acre of land, and I'd like to get some coverage in the back yard too. For completeness, I have an iPhone and EVO 4G. So I would like 800 ESMR, 1900 PCS, and 2500 WiMax, if possible. Thanks in advance and sorry about wandering a bit.