Make sure you understand the license terms that apply to your (or your organization) before using this switch.

The /IACCEPTSQLSERVERLICENSETERMS parameter indicates your acceptance of the SQL Server licensing terms.This author is unable to determine whether this process allows changing of keys between other editions due to lack of required software to test with. The linked article specifically references changing the license key for SQL Server 2008 Developer Edition.%NEW_PRODUCT_KEY% represents the new product key that the will be applied to the specified SQL Server Instance. Where: %INSTANCE_NAME% is the SQL Server instance that will have its product ID changed`

Setup.exe /q /ACTION=editionupgrade /INSTANCENAME= /IACCEPTSQLSERVERLICENSETERMS It is also possible to change the product key at the command line using the command The trial period of the Microsoft SQL Server 2008 R2 180-day Evaluation version had come to an end on my laptop and the SQL Server had stopped working. From the Maintenance screen choose Edition Upgrade Microsoft SQL Server Enterprise Edition 2008 R2 Russian Government OPEN 1 Licens.Net and Visual Studio and within your service-oriented architecture (Soa) and business process through Microsoft Biz Talk Server while information workers can access data directly in the tools they use every day, such as the 2007 Microsoft Office system.According to this article (referenced originally by nopol's answer) it is possible to change the product key of a SQL Server 2008 installation by performing the following steps: Description: Microsoft SQL Server 2008 R2 for database management.

Sql Server 2008 enables you to consume your data within custom applications developed using Microsoft. DownloadMicrosoft SQL ServerMicrosoft SQL Server 2008 R2 for database managementfrom Direct link. Your data can be stored and accessed in your largest servers within the data center all the way down to desktops and mobile devices, enabling you to have control over your data no matter where it is stored. Sql Server 2008 delivers a rich set of integrated services that enable you to do more with your data such as query, search, synchronize, report, and analyze. It enables you to store data from structured, semi-structured, and unstructured documents, such as images and music, directly within the database.

Sql Server 2008 delivers on Microsoft's Data Platform vision by helping your organization manage any data, any place, any time.

Sql server 2008 enterprise edition key