[Scott MacVicar]

put this code into a text edit and save it as a php file, ie file.php
upload to your vBulletin forums directory and then go run it in your browser, it will import from this old database you've described to the new vBulletin one, I presume your using 2.2.0 or above.

PHP Code:

<?
require("./global.php");
if(empty($start)) {
  $start = 0;
}
$query = $DB_site->query("SELECT * FROM studentpilot.users LIMIT $start, 100");
while($users = $DB_site->fetch_array($query)) {
  $finished = 1;
  $DB_site->query("INSERT INTO user (username, password, email, birthday) VALUES ('".addslashes(htmlspecialchars($users[username]))."','".addslashes(md5($users[password]))."','".addslashes(htmlspecialchars($users[email_address]))."', $users[dob])");
  $userid = $DB_site->insert_id();
  $DB_site->query("INSERT INTO userfield VALUES ('$userid','','','','')");
}
if($finished) {
  echo "<p><script language=\"javascript\">window.location=\"$PHP_SELF?start=".($start+100)."#end\";</script><a name=\"end\"></a><a href=\"$PHP_SELF?start=".($start+100)."#end\"><b>Continue with next</b></a></p>\n";
}
else {
  echo "<p>Import complete</p>";
}
?>