hi,
xl security is not that great. there are a number of third party freeware
that will crack passwords.
http://www.mcgimpsey.com/excel/removepwords.html
http://www.cpearson.com/excel/password.htm

here are 2. do a google. youl'll find more.
regards
FSt1

"Centrol" wrote:

I forget my password to a very important file.
Now I can't open it. really desperate.

Plse help me.