Design Extender Power CMS Installing

Hi,
I need help to install Power CMS in my hosting. I have Dreamwaver CS 5.5. I have experienced a lot of errors massages. I am crazy about this extension . I cant find a step by step tutorial.
See what I have tried:
I created a single page in dreamweaver, clicked at div that I want to insert PowerCMS.
-Menu webassist- CMS - Add content to powerCMS
PowerCMS Builder window have opened
Connection: name: con_power
Sever:localhost
username:user_username
pasword: ........
database:user_databasename
(database that I already have created in my control panel with this user)

Content location: index
Content area:main

OBS:My sever connection is good because I can access all my files at my remote server

When I click at finish button I receive a message:error then connect your database.the test server does not map with MMhttpDB.php
That is it.
Please help me to install it.
Thanks
Dungol

this error message means that there is an issue with the testing server settings for your site definition.

In the site definition, go to the servers section. edit the server is checked as the testing server, make sure you have entered a valid address to your site as the web URL.