As noted above, dictionary-based attack is *very* effective, so please try it first. Moreover, if you know the "structure" of the password (for example, the characters at some positions), it is recommended that you create your own dictionary based on the rules you have. There are a lot of dictionary generators around; some (developed by third parties) are available from our Password Recovery Software page:

http://www.elcomsoft.com/prs.html

The password generator may also help if you "almost" remember the password.  You might have missed one or two characters, or typed an extra one, or just missed a few characters – some generators allow "mutating" the password and can print/save all similar ones (creating a new wordlist or dictionary, which can be used with ARCHPR).

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