Hi W,
It sounds like you want to use a ListView with the GridView layout:
data-win-options="{layout: {type: WinJS.UI.GridViewLayout}}"
There are a bunch of samples that show how to bind to a list view.
This quickstart should give you the basic skills you need:
http://msdn.microsoft.com/en-us/library/windows/apps/hh465496.aspx
The go to the samples section and see if any of the ListView samples fit the bill. Also the Grid Application template when you create a new project shows using a gridview and how to bind data to it.
-Jeff
Jeff Sanders (MSFT)