/Applications/Microsoft Office 2011 folder (copy the entire folder, with all its contents)
/Library/LaunchDaemons/com.microsoft.office.licensing.helper.plist
/Library/PrivilegedHelperTools/com.microsoft.office.licensing.helper
/Library/Preferences/com.microsoft.office.licensing.plist
Source
http://cwl.cc/2012/02/easy-way-to-move-your-microsoft-office.html