Microsoft Knowledge Base Article 326246 contains the following summary:

This article describes how to contact Microsoft for help with the following issues:

Replace lost, broken, damaged or defective Microsoft software disks.
Purchase product upgrades.
Replace broken or defective Microsoft hardware products.
Check the status on support orders.
Order downloadable service packs.
Replace missing manuals.

Note The current owner must be in possession of the product and be able to provide proof of purchase of all products when making requests for replacements through the Supplemental and Replacement parts team. The Supplemental Parts team provides service for the United States (U.S.) and Canada only. Submit all foreign replacement part and service pack issues to the appropriate local subsidiary.