When you view the page, is the address something to the affect of
http://www.mydomain.com?Under the SME Navigation --> Configuration --> Domains --> Modify, what I-Bay is the
www.mydomain.com set to? Primary?
Check to make sure it is the same that you are placing the HTML page that works.
Secondly, you said
Entire Internet with password
Do you want this site passworded, and when you try to access it, are you being prompted for a username and password?
If not, make sure your domain (see domain configuration above) is pointing to the correct I-Bay and that should remedy the problem.
Brian