Hi Gurenkuraku. We don’t have the capability to restore your e-mail folders but we can try to recover the messages in those folders. Just post your e-mail address here and we’ll try to retrieve them.
About the spam that you received, there’s still another thing that you should do to make sure that your account is secured. See this link for the details:
http://windowslivehelp.com/solutions/safety/archive/2009/04/29/recent-reports-of-account-hijacks.aspx