Well, tell your homies over there at Nokia that unlike Europe they'll have to actually "work" at getting the word out about their products over here in the US.
That means billboards, radio, television, AND the internet in addition to any other "word-of-mouth" tricks like the excellent S60 flagship store meets that NO ONE outside of the S60 fanbois crowd knew about.
And they better be ready to deal with the devil. That's right, I'm talking about Walmart.
Keep the phones unlocked and just say they work with AT&T and T-Mobile on the box.
Nokia can do what Apple SHOULD HAVE DONE IN THE FIRST PLACE.
But hey, I'm sure they have a room full of college educated ad execs over there that know how it's done <cough> better than me.