Installation Instructions for ExtendedAttributesCSharp This Addin relies on SAS features new in version 9.4, It will not work with SAS 9.3 and below. All you will need to try this addin is the .DLL file located in the zip file. The .DLL is in the folder: "ExtendedAttributesCSharp\bin\Release\ExtendedAttributesCSharp.dll" Copy the dll to: %appdata%\SAS\EnterpriseGuide\\Custom Where is your EnterpriseGuide version e.g. 6.1 See this note on security setting changes you will have to make on the dll http://support.sas.com/documentation/onlinedoc/guide/customtasks/book/#sec_note More information on the security issue: http://msdn.microsoft.com/en-us/library/ee890038.aspx