Sorry about that I should have included that information in the earlier post. Check out this article for an overview of how services behave http://www.atpm.com/16.01/services.shtml It has been a while since I wrote it but the information was written for Snow Leopard. If you are already familiar with what services are you can skip to the section called Customizable Services.
Basically what you will do is launch Automator and select Service. When the window appears and you choose what the service will act upon choose "no input" in the drop down menu and select when you want it to appear from the second drop down,
After you have done that add the actions Stress Test posted earlier in the thread to your workflow. The last step is to save your work with a descriptive name. You will have one of these mini single step workflows for each location that you want to change.