When inside Adobe Dreamweaver you will go to the sites task pane click on the drop down and go to manage sites. Then click new and site. On this pane you will be able to enter the server information for Arvixe, Pacific host, Blue host, Godaddy and Hostgator.
What I want you to note here is the URL prefix: http://ftp.yoursite.com/public_html/yoursite/, this is the setting that is going to work for Arvixe host and Pacific host when setting up FTP with Adobe Dreamweaver."Arvixe & Pacific Host FTP Settings For Adobe Dreamweaver"