I see the final tally as something like 35 million in Japan and 30 million in each the Americas and the Other terretories. That would bring it to 95 million. However if it can sell as well as the GBA did in the Americas (nearly 40 million) than it's looking at around 110 million world wide. Assuming the DS has at least a five year lifecycle before the next Nintendo handheld and continue to do well after the next handheld is released than it's heading to a 90 million plus final tally in any case.