Expandable post box…where to put the loop, postmetadata, etc.?

Hi Guys(“,)!
I just designed a theme which I am planning to have an expandable post box that is going to expand with regards to the number of my post.
My post box has rounded corners. I already sliced the top and the bottom in order for me to have those rounded corners. I also sliced 1 px within the center of my post box which is going to repeat in a y-axis. I just want to know where I’m going to insert the loop, postmetadata, etc?
Is it inside the div tag of the 1 px center image? I hope you can help me guys(“,)or maybe show me a sample code.