[kh99]

Maybe this: https://vborg.vbsupport.ru/showthread.php?t=168831

It's for an older version but I don't see any reason that it wouldn't work with vb4. Also it includes a way to exclude "small" words from being capitalized, but if you don't want that you could just create a plugin using hook newthread_post_start and this one line:

PHP Code:

$vbulletin->GPC['subject'] = ucwords(strtolower($vbulletin->GPC['subject']));