Without an LAA/USS auction license you cant do anything on your own. I would suggest you hook-up with someone that has an legitimate license. Sorry to sound so harsh, but this is the reality of it. Also, you cant just apply for a license in Japan, you have to have an acutal business based in Japan like I do.
On the other hand, you could buy through yahoo auctions like every other importer in your nation and call them your Japanese suppliers.
Adam