Thanks for the response! To start, $cs_admin is just a variable I set as an added measure, which I may not need. So, basically, their information is registered, and it also sets the $cs_admin equal to true. I could dispose of this.
Now, as far as the post or get you mentioned. I'm assuming you mean something along these lines:
...and so on?
And for setting the $id, you were saying use the $_POST or $_GET variables as well. Would I write it as such:
I rewrote a login script that used three different pages to check everything. A login.php, checklogin.php, and login_success.php. It works, and I use the $_POST variable instead. Would you recommend using separate pages like this for a login, or keep it to one?
Also, just to add, like I said before this is an old script I wrote a few years back, and I've since started using <div> tags & XHTML. I'm more up to standards now!

It was just the form I had wrote before and didn't want to change it just yet.
I know there are a few questions here, but anything you can answer would be greatly appreciated. Thank you so much for your previous posts and any information you can give me!