WampServer

I'm having trouble starting Wamp. It worked the other day, at least as far as the icon being white, but I kept getting "Forbidden" errors. When I started my computer again today, all I got was the yellow icon. I reinstalled Wamp thinking something got corrupted, and now all I get is the red icon. I've shut down skype and I'm not running IIS. My firewall is letting everything through. Any idea what I could check next?