Hard to say, if this week and next week both hit a million, which is possible, then it could be as much as 5-6, if not, it could be as few as 2-3, so it depends on a few factors, how big Wii sales are in others and Japan this week, How high they are in japan next week and how big the dropoff in NA is next week if there is a dropoff, how well Japanese and NA sales are in December, etc.
I'd say 2-6
Predictions:Sales of Wii Fit will surpass the combined sales of the Grand Theft Auto franchiseLifetime sales of Wii will surpass the combined sales of the entire Playstation family of consoles by 12/31/2015 Wii hardware sales will surpass the total hardware sales of the PS2 by 12/31/2010 Wii will have 50% marketshare or more by the end of 2008 (I was wrong!! It was a little over 48% only)Wii will surpass 45 Million in lifetime sales by the end of 2008 (I was wrong!! Nintendo Financials showed it fell slightly short of 45 million shipped by end of 2008)Wii will surpass 80 Million in lifetime sales by the end of 2009 (I was wrong!! Wii didn't even get to 70 Million)