Yeah, those are fine. I realized that I had put a www. before the dbhost which I didn't realize I wasn't supposed to do. I changed that, and when I open my Posts.php file and/or my dbconnect.php files in my browser, I get a blank page and no "couldn't connect to server" error as there had been before.
Now when I test my .fla file in Flash, I get this output:
3/12 19:16:18 [INFO] : Creating Service for Posts
3/12 19:16:18 [INFO] : Successfully created Service
3/12 19:16:18 [INFO] : Invoking getPosts on Posts
css loaded
3/12 19:16:20 [DEBUG] : Service invocation failed.
3/12 19:16:20 [DEBUG] : Posts.getPosts() returned {code: "AMFPHP_RUNTIME_ERROR",
description: "mysql_query() [http://www.php.net/function.mysql-query]: Can't connect to MySQL server on 'localhost' (10061)",
details: "c:\websites\4sphyxia421\4sphyxia.com\flashservices\services\Posts.php",
level: "Warning",
line: 45}