PLEASE someone help me!

I had created a website for my team and had found out by my corporate office that I have to password protect my site. I've contacted the host (register.com) regarding this and they said that I have to buy another package called Web Hosting. I'm not sure what the difference is but would like to know how I can go about adding the password protected option. Do I have to buy another package or can I just add an option to protect what I have now?

Also, what is the best web hosting out there?

Thanks!