To find your host name if you don't know it, is very easy to find. Log into the Panel > Goodies > Mysql
Now you'll see a list of the databases that you have. across the top of each database's bax there's the firstname.lastname@example.org. You'll notice that the host.example.com is in very lage print, blue in color, and underlined. This is your host name, as well as a link to take you directly there.