How can you use AppCmd to configure bitrate throttling?

Hi I've read the documentation and I've looked at the schema, but I'm having difficulty understanding it!

I've used the UI to create this configuration, but I would like to know how to replecate it using AppCmd.

<location path="Default Web Site/MyApp/MediaStore/VirtDir"><system.webServer><media><bitrateThrottling enabled="true"><throttleSettings><fileExtensionRules><remove fileExtension=".wmv" /><add fileExtension=".wmv" settingType="media" initialBufferTimeSeconds="20" throttleRatePercentage="200" connectionLimitGroup="VideoFiles" /></fileExtensionRules></throttleSettings></bitrateThrottling></media></system.webServer></location>

Any help would be appreciated.

Thanks in advance.

Matt