Re: secure site
Use SSL. Thats what that is. When you see that yellow lock its because the site is using SSL (128 or 256-bit encryption) the easyest way to do that is... rather than http:// use https:// That will not work on all servers though. The server that hosts the site must have it enabled for that site. Sometimes it works sometimes it doesnt. Play around with it. or a better suggestion, check your cpanel settings for your hosting and look for ssl settings
SSL (Secure Socket Layer)
The Webopedia definition.
(pronounced as separate letters) Short for Secure Sockets Layer, a protocol developed by Netscape for transmitting private documents via the Internet. SSL uses a cryptographic system that uses two keys to encrypt data − a public key known to everyone and a private or secret key known only to the recipient of the message. Both Netscape Navigator and Internet Explorer support SSL, and many Web sites use the protocol to obtain confidential user information, such as credit card numbers.By convention, URLs that require an SSL connection start with https: instead of http:.
Another protocol for transmitting data securely over the World Wide Web is Secure HTTP (S-HTTP). Whereas SSL creates a secure connection between a client and a server, over which any amount of data can be sent securely, S-HTTP is designed to transmit individual messages securely. SSL and S-HTTP, therefore, can be seen as complementary rather than competing technologies. Both protocols have been approved by the Internet Engineering Task Force (IETF) as a standard.
"Security is nothing more than a thought that makes you sleep well at night." - Me
Wireless Network Security Spec.