One click install - Word Press

I am trying to install the latest version of word press through One click Installs.However, I get the below message. I am not sure what do I need to do. Can anyone give me a step by step procedure?

Install new website software:
You currently have no active domains with us. You’ll need to add one before installing any software!

» Some of your domains aren’t shown because you’ve configured them to use PHP4. You need to change this to PHP5 from Manage Domains to install software on them.

Is this Easy or Advanced Install? For Advanced, if you have a hosting plan, you need to set up a Fully Hosted Domain in the panel under Manage Domains.

This is easy Install.

Have you paid for Hosting here? This would be more than just registering a domain for $9.95/yr.

Easy Install is pretty open as far as what domain you enter in the field. If you enter a domain and you get an error, it could be that you’ve already set up some hosting in the Manage Domains section of the panel. Double-check and see if you already have that domain listed under Manage Domains.