You can download the trial version of the software using the link below and then use your current serial number to activate it. Look toward the bottom for the version 9 links.
Be sure to follow the steps outlined in the Note: Very Important Instructions section on the download pages at this site.
http://prodesigntools.com/adobe-acrobat-x-10-pro-reader-suite-direct-d ownload-links-ddl.html
