You can have widgets on any page type by adding a WidgetArea to it. Open the page type code and add

static $has_one = array(
   "MyWidgets" => "WidgetArea"
);

then in the getCMSFields you will need to add the widget drag and drop system

function getCMSFields() {
   $fields = parent::getCMSFields();
   $fields->addFieldToTab("Root.Content.Widgets", new WidgetAreaEditor("MyWidgets"));
   return $fields;
}

Then last but not least you need to open up your template file and add the code to render the widget area. In this example you would need to put $MyWidgets in the template some where.

Remember to db/build and then flush the page.

Rather then explain and give you the full solution its probably better if you actually read tutorial 1 and 2 - http://doc.silverstripe.com/doku.php?id=tutorials and get to under stand the basics first, Tutorial 2 should cover what you need to know for this.