You have to get Linux to install PHP software, its the only server which supports it, get it so its PHP 4 + and MySQL databases support too.

Once you break through those boundaries into PHP your in a whole new world you can install pretty much anything like hosting your own blog, forums, CMS based website it truly is great.

Also what you were talking about is a 'multiple login' content manage systems are capable of doing this, it works my the server collecting your IP address and giving you access for a small period of time if you go idle, but keeps updating the time frame if you are active.

If you want to learn a few scripts to do this to get it programmed manually try this website has plenty of sections for you to read and it doesn't take much experience to understand.

http://php.about.com/od/learnphp/Learn_PHP.htm

Hope you get on ok! Once you do it once its really simple

__________________