WampServer

Hello,

I installed Wamp today on my Windows 7 machine. The icon in the status bar is green. When I click on it, and then go to localhost, I go what looks like the normal landing page.

I put a project into the www folder call "project_one" with a php.index file inside. A link for "project_one" shows up in the Wamp landing page, but when I click on it, I get a

500 Internal Server Error - The server encountered an internal error or misconfiguration and was unable to complete your request.

Any ideas what to start troubleshooting?

Thanks in advance.