Corrupt Excel File

I have an Excel 2007 file which has become corrupted. I have been trying for a week to get this thing opened and I can't. I have tried various free programs still to no avail. It is VERY IMPORTANT data to me, although tot he common person it would be pointless. There are about 20-30 sheets (I can't remember exactly how many), and each one contains a table which houses a different account's checkbook registry. On each page there is also an array formula in cell A2. I am not concerned with the formulas, I could care less! If they can be carried over, great. If not, Oh Well! I just need the data itself extracted, ASAP! Please advise of your experience with data extraction. I will not entertain automated bids, or silly "I can do this" statements. Please be real, as to me, this is a real issue! Thanks in advanced.