Excel Password

Here are a few reference sites that may be of interest
1)www.pwcrack.com
2)www.crackpassword.com
3)www.lostpassword.com/msofpass

HI,
Try these...

http://www.denglad.com/aexpr.htm
http://lastbit.com/forgot-excel-password.html
http://www.downlinx.com/proghtml/59/5975.htm

http://www.billssoftwarepicks.com/software/system_utilities/security/Advanced_Excel_97_Password_Recovery_ElcomSoft_Co-_Ltd-.html

Hope this helps you.
GOOD LUCK...:)

Or if you want to use someones services, try www.passworddetectives.com

What version of Excel was the spreadsheet created in?

Try [url=http://www.microsoft-office-password-recovery.khozz.com]Office Password Recovery[/url] software
It is best third party software to recover excel password.