When creating extensions for Dreamweaver you'll need to save your files in particular places within the application's configuration files so that they will work properly. Here are the Configuration folder locations for Dreamweaver MX 2004 on PC and on a Mac.

PC:

C:\Program Files\Macromedia\Dreamweaver MX 2004\Configuration

C:\Documents and Settings\UserName\Application Data\Macromedia\Dreamweaver MX 2004\Configuration

C:\Documents and Settings\All Users\Application Data\Macromedia\Dreamweaver MX 2004\Configuration

Mac:

HD:Applications:Macromedia Dreamweaver MX 2004:Configuration

HD:Users:username:Library: Application Support:Macromedia:Dreamweaver MX 2004:Configuration

HD:private:var:root:Application Support:Macromedia:Dreamweaver MX 2004:Configuration

Tip: Create a Dreamweaver site pointing to each of the configuration folders so that you can easily get to and edit your extension files.

As you can see there are multiple places that a file can be stored, so which file is used by Dreamweaver if there is a file with the same name in the same location within one or more of the configuration folder? See the list below for the order of precedence a file takes:

1. User's folder
2. All Users/root
3. Application install folder