Corrupted excel file fix.

Hello,

I am new to this site. I did not find anything this fit under, so I am very sorry if this in the wrong section to post. I have an spreadsheet in a .xlsx format with a password on it. No other sites are helping because they all know the password and just want to disable it. I can't even look at the document, and I don't have the password. Nothing else is related to my case that I found, so I need help getting the password off. I use office 2010 for this file format. Please reply fast. I am good with computers and know a lot more than a lot of people, but please don't get technical on me, I'll get lost.

Thanks for the help,
Lennnny