You can apply, submit your unofficial scores and have your scores sent to the school.
From the schools website:
All applicants must submit a self-reported GMAT (Graduate Management Admission Test) or GRE (Graduate Record Examination) score (scores are valid for 5 years). Scores must be valid on the date of application submission.
If admitted, you must submit an official GMAT or GRE score. Columbia Business School's GMAC code is QF8-N6-36 and its GRE code is 6442. The Admissions Committee will consider only your highest score when reviewing your application and will not combine subscores from multiple exams into a single composite score.
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