PDFCreator lets you check for updates in the application settings. They can be reached by launching PDFCreator from the Windows Explorer. Navigate to the General tab and click Check now in the Update Check section. Please make sure you are connected to the internet before you check for updates.
If you have PDFCreator Professional or PDFCreator Terminal Server, the automatic updater will also assist you in performing the update. It downloads a new version if available. When you close PDFCreator, the update will be installed. This way, PDFCreator does not interfere with the work you are currently doing.