Let's create a new page & link to this one. To keep it simple, let's make this page the clearinghouse for all of your favorite links.
Go to File-->New-->Create
Type in "My Facebook Page" or "My Myspace Page" (whichever one you have).
Go to your facebook or myspace page & get the link to it.
Go back to Dreamweaver & highlight "My Facebook Page" and paste the link into the link box.
Now save this page to your desktop folder as "links."