Log into GoDaddy and clicke "My Hosting Account" in the "Hosting & Servers" drop-down menu.

Step 2

Select the hosting account that you want to work with. Your Premium hosting account will be named for the domain name you initially set it up on.
In my case, I'll be selecting aaportira.com by clicking "Open" next to it.

Step 3

Your Hosting Control Center opens to the Account Summary. Click the section directly below that - Settings - then select the "Domain Management" icon.
Sometimes it's slow to open - be patient. :)

Step 4

This page has a nice little walkthrough on the right-hand side, but it's not a thorough as it could be, so we'll continue here.
See that drop-down list at the top that says, "<enter domain name>"? Click it, and select the domain name you want to add from the drop-down list.
Next, you want to assign the Domain Hosting Path. I always name it the domain name without the .com or whatever. If I have a .com and a .net for the same domain name,
then I'll call it something like mysitenet and mysitecom.

What ends up happening is that while you can access the domain directly by typing www.domainname.com because GoDaddy autmatically points the DNS there, you can also
access it by typing the actual path (using the domains in my account up there) www.aaportira.com/amerigopartners/ .

So, okay, after you enter the domain name and choose the hosting path, click that orange button that says, "Add Domain".

It will go through a processing step and you'll see a dialog box that shows the progress. Then it will create a section for that domain name that will show "Pending Setup."
It takes about ten minutes for it to be ready for you to work with, but you're not done yet. Once the setup isn't pending any more, you can upload to it. Here's how.

This is how I've set up FTP for Dreamweaver for one of my domains on this Premier Hosting account that isn't the primary domain for the account:

Step 5

The login information is the same for all the domains you're hosting on the Premier Hosting account. The only thing that changes from
domain to domain is the Host Directory.

I think that about covers it. If you have any questions, give me a holler. :)