we expect capital expenditures in 2007 to be about $ 1.2 billion , or about equal to estimated depreciation and amortization . we will continue to focus our future capital spending on improving our key platform businesses in north america and on investments in geographic areas with strong growth opportunities . acquisitions in october and november 2006 , international paper paid approximately $ 82 million for a 50% ( 50 % ) interest in the international paper & sun cartonboard co. , ltd