在Dreamwaver的安装目录下找到"Configuration\DocumentTypes\MMDocumentTypes.xml"这个文件并用记事本打开，找到以下代码：
<documenttype id="HTML" internaltype="HTML"
winfileextension="htm,html,shtml,shtm,stm,tpl,lasso,xhtml"
macfileextension="htm,html,shtml,shtm,tpl,lasso,xhtml" file="Default.html"
writebyteordermark="false">
改成：
<documenttype id="HTML" internaltype="HTML"
winfileextension="你想要的类型,html,shtml,shtm,stm,tpl,lasso,xhtml"
macfileextension="htm,html,shtml,shtm,tpl,lasso,xhtml" file="Default.html"
writebyteordermark="false">
