When customizing the appearance of the CC.NET Web Dashboard, you often need to modify the file c:\Program Files\CruiseControl.NET\webdashboard\dashboard.config. However, you won't see the changes you make there reflected back in the browser until that file is reloaded.
The easiest way to reload dashboard.config is to quickly modify web.config (add a space and delete it), and save. This forces IIS to reload the web application, which in turn causes dashboard.config to give up it's new settings. This is especially useful in a hosted environment where you don't have access to administration-level tools.
An alternative would be to just bounce the entire web server by stopping and starting the service, but that's not always feasible nor practical.
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.