When i enter the Unity webpage i see nothing about an assets store. When i enter the Store i see nothing about an assets store. When i read carefully the Unity Asset Store - The Best Assets for Game Making page, i cannot find the assets store neither. Also in Unity Editor itself, no hint for an Assets Store.
The asset store is within your unity 3.1 editor under the menu entry windows
Its not available on the page and it will not provide you with download links but direct interaction in the form of an import button to incorporate the asset bundle in the currently open project