How to hook up ps3 to amp to tv with 2 hdmi cables?

I've got a ps3 to hook up using hdmi to my amp then using another hdmi cable from amp to tv, please tell me what inputs to put them in and what inputs on tv please, I have 3 hdmi "ins" on tv and only amp I have 1 "hdmi in" and one input for bd and one for input out. please help ASAP thank you;-)