Originally Posted by Dan It's not something I've looked into, sorry. All I know is sitepoint have an awesome syntax highlighting function and they're on vBulletin.

They are using the plugin I found, but sitepoint almost certainly tested it and may have fixed a bug or two. Advanced Syntax Highlighting is in RC1 right now, so it will have stable release soon. I will add it as soon as they put out a stable release.