@Mankie30@gmail.com -- Like WPyogi mentioned they are referring to a browser plugin/extension called Firebug that you can use in Firefox to see and modify the source of a webpage that you currently have open. There are similar tools for Internet Explorer and Google Chrome already built in.
To complete what they are describing you FTP into your wordpress website, make a copy of the wp-login.php to something else like wp-login2.php, and then go to yourwebsitename.com/wp-login2.php
On that page use Firebug (if you're using Firefox) to inspect the page and find the <form> tag and edit the destination.
If all of this is still too complex though, I'd advise just waiting for 1&1 to come up with a solution, as you could accidentally break your website more if you aren't careful.