Integrating username/password login with the rest of my site - How?

[ethanwa]

Hi -

We just bought vBulletin and we'd like to integrate the login system of the forums throughout our custom built site. We want to allow users to login/logout from any page on our site.

We'd also like to allow users to create a username/password without going directly through the forum signup page, but through a custom PHP page we build ourselves.

Are any of these possible? Are there any customs scripts, additions, hacks, etc that can allow me to do these things?

Thanks,

Ethan