Microsoft just reset my password for me (after several days of going back & forth with questions to verify that I owned it) - I now have my old hotmail account back.
I guess it wasn't so hard to verify that it had been hacked - all of my emails were obviously in English but the little #$%^@ had changed the language to Chinese!!
I've changed the password etc etc on it - will still keep using the new one, but at least I'll be able to keep an eye on the old one in case something untoward turns up. Or in case someone who doesn't know the new account contacts me.
It doesn't look like anything was touched - no sent emails from it etc, but who knows how far the info has been spread in hacker land..