Unfortunately there is no way to crack Excel passwords, unlike Windows passwords. The Excel password "crackers" are programs that simply (joke!) go thought all the possible combinations of letters, numbers, upper case, lower case, characters etc. Depending on how complex the password was it can take years to run!!! Some sites give you an estimation eg 6 character password with numbers and letters all lower case = 12 hours. 12 character password, upper and lower case = 2 years.
I have no experience of using such programs.
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Edited by Nick_Russell (Fri 08-Jan-10 09:24:51)