If you ever need to restart your site's ColdFusion application (to pick up a setting change, etc), you can do so via the ApplicationStop() function in ColdFusion 9.

To use this you can create a file (ex: restart.cfm) containing the following code:
<cfset ApplicationStop() />
<cflocation url="index.cfm" addtoken="false" />
When you run the file containing that code your ColdFusion Application will be stopped, and when the browser is redirected to the index page it will start up again.