How Do you Poison with Polonium?

I have been waiting for my brain to fuly begin obsessing about the mysterious poisoning of Alexander V. Litivinenko, and todays NY Times article about top suspect Andrei K Lugovoi and his passionate insistence he is being set up by British intelligence and a Russian Business Tycoon, Boris Berezovsky, i think is finally getting me as obsessed with it as Anna Nicole's baby daddy drama...

But before i delve into it, I am hoping that somewhere in some past article, they physically describe just how one gets a radioactive isotope into a cup of coffee. Is it on a little piece of paper like LSD? Is it immersed in a liquid? is it like a little dandruff flake? It seems like it would be so hard to do simply because of its unweildy microscopicness...