The build numbers correspond to the currently installed update rollup number.
http://social.technet.microsoft.com/wiki/contents/articles/8062.crm-2011-build-and-version-numbers.aspx
Server & Database
From the CRM website – navigate to the File Menu -> Help -> About Microsoft Dynamics CRM
Deployment Manager – Select Servers
Control Panel – Uninstall a program – select Microsoft Dynamics CRM Server 2011
Reporting Extensions
Control Panel – Uninstall a program – select Microsoft Dynamics CRM 2011 Reporting Extensions
Email Router
Control Panel – Uninstall a program – select Microsoft Dynamics CRM 2011 E-mail Router
Language Packs
Control Panel – Uninstall a program – select Microsoft Dynamics CRM 2011 XXX Language Pack
Outlook Client
Control Panel – Uninstall a program – select Microsoft Dynamics CRM 2011 for Microsoft Outlook
Open Outlook – File menu – CRM – About Microsoft Dynamics CRM
Report Authoring Extension
Control Panel – Uninstall a program – select Microsoft Dynamics CRM Report Authoring Extension
