Register HttpModule in IIS6 and IIS7

For IIS6 and IIS7 Classic Mode register your module in web.config in the following manner:

<configuration>
  <system.web>
    <httpModules>
      <add name="Your HttpModule name" type="Namespace.ClassName,AssemblyName"/>
    </httpModules>
  </system.web>
</configuration>

For IIS7 in Integrated Mode do the following:

<configuration>
  <system.webServer>
    <modules>
      <add name="Your HttpModule name" type="Namespace.ClassName,AssemblyName"/>
</modules>
  </system.webServer>
</configuration>