Windchill Desktop Integration (DTI) allows you to perform Windchill actions on documents (such as downloading, checking out, and checking in content) without opening Windchill in a web browser. You can also use Microsoft Office applications (Microsoft Word, Microsoft Excel, Microsoft PowerPoint, and Microsoft Outlook) to create, edit, and save Windchill documents.
For detail information of Installation, Configuration and Attribute Mapping refer the attached Document.