From the "Select a product" drop down select "Yahoo! Account", from "Select a category" drop down select "Password and sign in", form "Select a sub-category" select "forgot my secret questions and answers", click "Password Helper" and then follow the onscreen instructions.
"Kioskea cannot help to recover lost passwords or digital identification keys due to security reasons. First of all, it is very difficult to prove that such a request is a legitimate password recovery request and ascertain that the user has really lost the password, rather than merely posing as someone else in order to hack into a system. Even if the user can prove their identity, Kioskea will refrain to answer the query as the thread would remain visible in the forum. It might be used for malicious purposes such as piracy and hacking, both of which are illegal activities. As this forum does not endorse such activities, Kioskea cannot help to recover lost passwords."
It is not possible to assist you further with your query.