How do I transfer my inbox back to yahoo from outlook express?

I neglected to check the box about leaving messages on the server when I set up Outlook Express. How can I get my inbox back on yahoo?|||open outlook express %26gt; tools %26gt; accounts %26gt; select the yahoo account %26gt; remove button %26gt; yes %26gt; close %26gt; file %26gt; exit.|||Disable or delete outlook express.|||That's simple don't open outlook and it won't import yahoo.