go onto the daoc subs page and go to the sponsorship section.
You can enter a message and up to (3 i believe) email addresses and the email addresses get sent a cdkey for a trial (7 days i think but could be wrong).
I dont know the ins and outs of turning the free trial account into a normal game account though.
I heard mmorpg.net has a free trial. Otherwise I think you get one with the new package that is released tomorrow. Or go to your subscription page and you can invite people to daoc there, they recieve a free weeks trial or something.