Vbulletin login box on a non vbulletin page

Having the login form is no problem.

<!-- login form -->
		<form action="login.php?do=login" method="post" onsubmit="md5hash(vb_login_password, vb_login_md5password, vb_login_md5password_utf, 0)">

		<script type="text/javascript" src="clientscript/vbulletin_md5.js?v=370b5h"></script>
		<table cellpadding="0" cellspacing="3" border="0">
		<tr>
			<td class="smallfont"><label for="navbar_username">User Name</label></td>
			<td><input type="text" class="bginput" style="font-size: 11px" name="vb_login_username" id="navbar_username" size="10" accesskey="u" tabindex="101" value="User Name" onfocus="if (this.value == 'User Name') this.value = '';" /></td>
			<td class="smallfont" nowrap="nowrap"><label for="cb_cookieuser_navbar"><input type="checkbox" name="cookieuser" value="1" tabindex="103" id="cb_cookieuser_navbar" accesskey="c" />Remember Me?</label></td>
		</tr>

		<tr>
			<td class="smallfont"><label for="navbar_password">Password</label></td>
			<td><input type="password" class="bginput" style="font-size: 11px" name="vb_login_password" id="navbar_password" size="10" tabindex="102" /></td>
			<td><input type="submit" class="button" value="Log in" tabindex="104" title="Enter your username and password in the boxes provided to login, or click the 'register' button to create a profile for yourself." accesskey="s" /></td>
		</tr>
		</table>
		<input type="hidden" name="s" value="" />
		<input type="hidden" name="do" value="login" />		
		<input type="hidden" name="vb_login_md5password" />

		<input type="hidden" name="vb_login_md5password_utf" />
		</form>
		<!-- / login form -->

However, when you start talking about it knowing when you're logged in, and displaying your user information, now you're talking about a dynamic page that pulls information from the database. Since you self-acknowledged you're not a PHP programmer, I would check out vBulletin.org and, more specifically, the vBAdvanced CMPS product. It might be just what you're looking for.

<?php
$curdir = getcwd();
chdir('YOURROOTTOFORUMS');
require_once('YOURROOTTOFORUMS/forums/global.php');
chdir($curdir);
if ($vbulletin->userinfo['userid'] == 0) {
  echo "<center><form id=\"login\" action=\"/forums/login.php?do=login\" method=\"post\" onsubmit=\"md5hash(vb_login_password, vb_login_md5password, vb_login_md5password_utf, 0)\">
<script type=\"text/javascript\" src=\"clientscript/vbulletin_md5.js?v=364\"></script>
<a href=\"/forums/register.php\">Register</a>
<label for=\"navbar_username\">Username</label>
<input type=\"text\" class=\"bginput\" style=\"font-size: 11px\" name=\"vb_login_username\" id=\"navbar_username\" size=\"10\" accesskey=\"u\" tabindex=\"101\" onfocus=\"if (this.value == 'User Name') this.value = '';\" />
<label for=\"navbar_password\">Password</label>
<input type=\"password\" class=\"bginput\" style=\"font-size: 11px\" name=\"vb_login_password\" id=\"navbar_password\" size=\"10\" tabindex=\"102\" />
<label for=\"cb_cookieuser_navbar\"><input type=\"checkbox\" name=\"cookieuser\" value=\"1\" tabindex=\"103\" id=\"cb_cookieuser_navbar\" accesskey=\"c\" />Remember Me?</label>
<input type=\"submit\" class=\"button\" value=\"Login\" tabindex=\"104\" title=\"Enter your username and password in the boxes provided to login, or click the 'register' button to create a profile for yourself.\" accesskey=\"s\" />
<input type=\"hidden\" name=\"s\" value=\"\" />
<input type=\"hidden\" name=\"do\" value=\"login\" />        
<input type=\"hidden\" name=\"vb_login_md5password\" />
<input type=\"hidden\" name=\"vb_login_md5password_utf\" />
</form>";
} else {
  echo "<center>Welcome Back, <b>".$vbulletin->userinfo['username']."</b>";
  if ($vbulletin->userinfo['usergroupid'] == '6' ) {
  echo "&nbsp;|&nbsp;<a href=\"/forums/member.php?1-".$vbulletin->userinfo['username']."\">My Profile</a>";
  echo "&nbsp;|&nbsp;<a href=\"/forums/egncadmincp/index.php\">AdminCP</a>";
  echo "&nbsp;|&nbsp;<a href=\"/forums/egncmodcp/index.php\">ModCP</a>";
  }
}
?>

Sorry the above code works 100% its a great way of logging people in you may need to edit the way the form looks in the echo however it works great.

Hello friends, sorry about post in a old post, but I'm using the @Dani code and it login BUT when I back to the page, isn't logged, someone can help me? Please? (Is a non vBpage is an external .php) (In the main directory, and my forum is in /forums)

Thanks in advance!!

    <input type="hidden" name="s" value="$session[sessionhash]" />
    <input type="hidden" name="do" value="login" />      
    <input type="hidden" name="vb_login_md5password" />
    <input type="hidden" name="vb_login_md5password_utf" />
    <input type="hidden" name="url" value="REDIRECTION URL HERE" />