I currently run Lion with Office 2011 and need to re-install Lion after wiping out my HD. I however no longer have the DVD with which I installed Office. How shall I go about re-installing it again having no access to the DVD anymore?
If you have a working backup on Time Machine, you can reinstall Lion, then run Migration Assistant, restoring both user accounts and applications from the Time Machine drive.
For me, this worked to reinstall Microsoft Office without resorting to the physical media and without having to download or re-enter product keys.
The trial software download is no longer on Microsoft's page above -- just Office 365. However, I was able to get a download link in less than one minute using the LiveChat feature to contact an agent. She gave me a link to a page that asked for my product key and that subsequently gave me a download link.