Honestly, if you are sure that you can quickly implement the solution (say, 1 hour) with excel 2007. Bear in mind that Office 2007 costs ~ $ 500, and regardless of your hourly rate (let's just say $ 50 for kicks), then you you will need to build something in 10 hours and something else that you better go and buy Office 2007.
10 hours, which is less than 2 days. And the price is $ 500 for a new copy of the office, not a version for updating.
It looks like an update time.
By the way, here are a few numbers of Excel 2007 limitations.
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