Quick registration form in guest notice: possible?

[Ovid The Poet]

Originally Posted by Cyburbia

After the site was migrated to vBulletin 4.1.*, the old quick registration hack no longer worked. I haven't been able to find any kind of decent quick registration hack/plugin that places a registration form on the front page. I found something on another site, but it's Web 1.0 UGLY. I spent a long time tweaking the template, and I don't want to ruin the appearance of the site with some form that looks like it's something out of some guestbook script from 1996.

Where is the one you have found? If it works, it should be easy for me to make it look decent.