From an interview with The Boot... the entire interview is here: http://www.theboot.com/2010/02/16/keith-urban-interview/
Q: So since you didn't get a chance to give an acceptance speech, wanna give one now?
A: First and foremost, I'd thank anybody who voted for me! But certainly, Nic is just absolutely ... I don't even know if she's changed my life; she's given me a life. That's what it's all about. There's seemingly no relevance to my previous life, before meeting her. I have such deep love and gratitude for everything she's done for me. Words just escape me when it comes to her.
Thanks, Laura, for posting this earlier.