Any way to arrange inventory?

Im trying to figure out a way to mass arrange inventory when dealing with 1000’s of items. Im in the process of uploading a bunch of new inventory and I want the new stuff to be at the top of my list when shown to a customer under default view. I see there a “position” box on the “manage products” page but that option just wont work with as many items as Im importing, I need to be able to import the items.

Thank you!

using 1.3.5

I guess I’ll have to delete all previous items and then add new ones back first? Is there another way?