Where is the WebMatrix main config file?

I want to tweak the main config file for web matrix. I thought I found it in

C:\Program Files (x86)\Microsoft WebMatrix\config\applicationHost.config

but changing the file and restarting WebMatrix 开发者_开发知识库has no effect. Where can I find the file that it's using?

Worked it out. The config file WebMatrix actually uses is in IISExpress8\config in your My Documents folder, called applicationHost.config

For WebMatrix beta release config file was in %userprofile%\my documents\iisexpress8\config, but now (WebMatrix released), path is %userprofile%\my documents\iisexpress\config