No, there is no update for the Publisher 3 to enable functionality on a Windows 7 64bit computer. However, it's recommended to obtain the latest version of Publisher which is available for modern Windows versions on both 32 and 64bit versions. You can get more information by visiting the official website of the application. You might notice that you have the possibility to try the application for a month to see if it suits your business. Click the trial version and then follow the steps to acquire the package.