How can I directly access my old hotmail address?

I accidentally changed the email for my Microsoft Live account (when trying to update the alternate) and now can only access my old hotmail account through the new one (which does not allow me to send emails from this account using Outlook). It won't let me change the Microsoft account back to a hotmail account. Is there any way to do this or to get direct access to my original hotmail account? If I try to log into the old account, it says "that Microsoft account doesn't exist".

Also, will I continue to be able to receive email sent to the old hotmail account?