File extension handling
Add Drupal file types to the Extensions.txt file so Dreamweaver knows how to handle them:
Documents and Settings -> [user] -> Application Data -> Adobe Dreamweaver -> Configuration
Edit: Extensions.txt To the first line add MODULE, PROFILE, INFO:
HTM,HTML,SHTM,SHTML, ... ,TXT,PHP,PHP3,PHP4,PHP5,MODULE,PROFILE,INFO,JSP,WML,TPL, ... ,MASTER: All Documents
To the PHP Files line add MODULE,PROFILE,INC like so: