In Dreamweaver goto Site > New site
Select advanced tab
Local info: this where the files are stored locally on you PC.
Make sure you enter http address.

Select Remote info:
Access > FTP
FTP host = ftp.fast2host.com
Host directory = wwwroot/
Login = [your domain nane without www]
Password = [your FTP password]
Select save
Click TEST to make sure it connects ok.
If not try selecting Use Passive FTP.

Testing Server:
Select server > Select ASP or PHP or what ever you wish to use.
Access = FTP
FTP host = ftp.fast2host.com
Host Directory = wwwroot
Login = [your domain name without www]
Password = [your FTP password]
URL prefix = http://www.your-domain.com
Select Save and TEST to see if it connects ok.

Settings are now complete. Press OK and closed windows.