I downloaded my preorder from Direct2Drive. It was linked on the Warhammer site, towards the bottom.

As for servers, uh. I'm just playing on whatever my husband and our friends are playing on - I will let you guys know once we have it all figured out. I don't expect anyone to be all like OMG JEZIMAI I MUST ROLL A CHARACTER ON THAT SERVER! Because I generally just play when my husband is playing.

-Courtney