If your information technology (IT) administrator is unable to run the Server Configuration Utility on the remote Analysis ...

If your information technology (IT) administrator is unable to run the Server Configuration Utility on the remote Analysis Services database, or if you discover that your organization does not have Microsoft SQL Server 2008 (or later) installed, you can download the evaluation version of Microsoft SQL Server 2008 (or later) by running this tool again. This Getting Started tool is always available under the Help section,. You can also start the tool by clicking Start, All Programs, Microsoft SQL Server 2012 Data Mining Add-ins, and then Getting Started. 

You will need to follow up with your IT administrator to make sure that the Server Configuration Utility is run so that you can successfully use the Microsoft SQL Server 2012 Data Mining Add-ins for Office.

Doing it on your own?
If you want to install and run Microsoft SQL Server 2012 Enterprise Evaluation Edition, go to the following link:
http://www.microsoft.com/sqlserver/2008/en/us/trial-software.aspx

You will still need to run the Server Configuration Utility once you have successfully installed the evaluation version of Microsoft SQL Server 2012 Analysis Services. The Server Configuration Utility can be found here:
C:\Configurator.exe