Nothing to do with PHP, moving to apache.
Check your error logs for the cause and ensure that the port specified in the httpd.conf isn't in use.
Been gone for a few months, and haven't programmed in that long of a time. Meh, I'll wing it ;)PHP Code:
header('HTTP/1.1 420 Enhance Your Calm');
Log off Skype (to leave default port 80 free) and start WAMP.
May be successful.