This is what I put in the .php file I created and uploaded. Now, this is also going into a sub-directory, so maybe I didn't put it in the right one? However, I've tried quite a few of them.
<?php
// ######################## SET PHP ENVIRONMENT ###########################
error_reporting(E_ALL & ~E_NOTICE);
// ##################### DEFINE IMPORTANT CONSTANTS #######################
// change the line below to the actual filename without ".php" extention.
// the reason for using actual filename without extention as a value of this constant is to ensure uniqueness of the value throughout every PHP file of any given vBulletin installation.
define('THIS_SCRIPT', 'rules1');
// #################### PRE-CACHE TEMPLATES AND DATA ######################
// get special phrase groups
$phrasegroups = array();
// get special data templates from the datastore
$specialtemplates = array();
// pre-cache templates used by all actions
$globaltemplates = array(
// change the lines below to the list of actual templates used in the script
'rules',
);
// pre-cache templates used by specific actions
$actiontemplates = array();
// ########################## REQUIRE BACK-END ############################
require_once('./global.php');
// #################### HARD CODE JAVASCRIPT PATHS ########################
$headinclude = str_replace('clientscript', $vbulletin->options['bburl'] . '/clientscript', $headinclude);
// ################################################## ######################
// ######################### START MAIN SCRIPT ############################
// ################################################## ######################
$navbits = array();
// change the line below to contain whatever you want to show in the navbar (title of your custom page)
$navbits[$parent] = 'OFCF Rules';
$navbits = construct_navbits($navbits);
eval('$navbar = "' . fetch_template('navbar') . '";');
// change the line below to contain the name of the actual main output template used in your script
eval('print_output("' . fetch_template('rules') . '");');
?>
And here is the code that I placed in the template that I created in admincp.
$stylevar[htmldoctype]
<html dir="$stylevar[textdirection]" lang="$stylevar[languagecode]">
<head>
$headinclude
<title>$vboptions[bbtitle]</title>
</head>
<body>
$header
$navbar
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%"
align="center">
<tr>
<td class="tcat">OFCF Rules</td>
</tr>
<tr>
<td class="alt1">Other Bluff...</td>
</tr>
</table>
Thank you for your help! :)