[ReCom]

Yup, $vbulletin is the core vbulletin registry object; you can't miss it except for one possible reason:

You tried to access it from withn a function but forgot to do "global $vbulletin;" first

PHP Code:

function blah()
{
  global $vbulletin;
  doSomething->to($vbulletin->userinfo['styledid'];
} 


Or if your code is in the form of a plugin, and the hook location happens to fall inside a class function, try using this instead:

PHP Code:

$this->registry->userinfo['styleid']