PHP Question

[AWI]

I have this script which is written in PHP, I need to create a custom vBulletin page and involve that PHP script. I understand that Hooks add pieces of PHP script in pages where needed but how do I do this.

The way I understand it is you create a new PHP file such as TEST.php then add the code to call a template. After that I create the template to be called which we will call TEST. Now I create a hook with the php script called test_script now how would I call this hook so it is displayed in the template? Also the php script needs the use of other scripts located on my server will this still work?

Basically how the script operates is like this.

User input---->script sends input to another script-------->other script sends the ouput to the template.