Click the next button, then click finish.
The error you are getting is a common one when working with templates in Dreamweaver.
There is no solid fix for the issue, but I have discovered a workaround. See the following thread for details:
showthread.php?t=4509
the php.ini settings you are referring to are for sending out emails, the wamp server does not include an smtp server so sending emails will not work when testing locally.