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.
Would LOVE his if it really worked we have all kinds of trouble with it. You should probably add the preferences that should be set also, under "Attachments" (for upload and download mechanism) and "Documents" for Default Contexts in Windows Explorer
The attachment is based on MS Office 2007. For 2010, there is an option in MS Word 'Insert Windchill Attribute Field', which gives a nice overview of insertable attributes.
This document could use some updates/suggestions re: Windchill 10.1 DTI. Personally, I would also suggest upgrading from 10.1 M010 to M040. PTC did a lot of quality work to ensure a stable and robust working environment for DTI @ M040.
The process of inserting attributes is covered nicely in the Windchill Help Center under the "Inserting a Windchill Attribute" topic.