Looks like your paths are a bit out to me.
If your site files are all in the root of the folder dd09/ then the path to your MySql connection would be <?php include "../Connections/localhost.php"; ?>. That's assuming that your Connections folder is in the root of the site. The same applies to the <?php include "WA_CMS/WA_CMS.php"; ?>. Perhaps that should be <?php include "../WA_CMS/WA_CMS.php"; ?>
Personally every time I make a new page I browse to the file required using the built in DW tools in the properties panel. Each page could be different. If you are using a DW template then get the path correct in the template and then DW will take care of it all.
The suggestion that PowerCMS creates is really just that, a suggestion. It all depends how you set up your site. The suggestion assumes that all your files and folders are in the site root. If they are not then you may have to add "../" at the front or even "../../"
Hope that helps.