arjunreddy What version of SAM are you using? AppInsight for Active Directory was introduced in SAM 6.8 so you should upgrade to the latest version of SAM if you haven't already. The template is included in all installations of SAM 6.8, SAM 6.9, and SAM 6.9.1.
SAM's AppInsight templates are powerful, complex templates that offer a level of detail beyond what standard SAM templates provide. For that reason, you cannot import or export AppInsight templates in SAM, nor can you add component monitors. Some component monitors can be edited, but others are read-only due to how different component monitors interact.
Here are some helpful links to get you started: