Specify the editor to start from Dreamweaver

You can specify the editor you want Dreamweaver to use for editing a file type, and add or delete file types that Dreamweaver recognizes.

Select Edit > Preferences and select File Types/Editors from the Category list.
Filename extensions, such as .gif, .wav, and .mpg, are listed on the left under Extensions. Associated editors for a selected extension are listed on the right under Editors.
Select the file type extension in the Extensions list and do one of the following:
- To associate a new editor with the file type, click the Plus (+) button above the Editors list and complete the dialog box that appears.
  
  For example, select the application icon for Acrobat to associate it with the file type.
- To make an editor the primary editor for a file type (that is, the editor that opens when you double-click the file type in the Files panel), select the editor in the Editors list and click Make Primary.
- To dissociate an editor from a file type, select the editor in the Editors list and click the Minus (-) button above the Editors list.

Click the Plus (+) button above the Extensions list and enter a file type extension (including the period at the beginning of the extension) or several related extensions separated by spaces.
For example, you might enter .xml .xsl if you wanted to associate them with an XML editor installed on your system.
Select an editor for the file type by clicking the Plus (+) button above the Editors list and completing the dialog box that appears.

Select the file type in the Extensions list and click the Minus (-) button above the Extensions list.

Note: You can’t undo after removing a file type, so be sure that you want to remove it.

Dreamweaver