Right then, I've done a search and here are my results
These are the only ones that I can find but as they are all for vB2 it explains why they don't work with vB3. The setup is completely different and converting them can take an extremly long time to do. Before you start thinking about converting them, you also need to have permission from the original author. If you can get the permission though I'm sure someone will be willing to help you out.