integrate vBulletin auth system with my site

[ArbuZz]

I have a problem. I have a website with its own authentication system. And now I want to integrate it with vBulletin. So that users will have to login only once, either on the website or on the vBulletin and stay logined afterwards. Is it possible? PHP, mySQL is not a problem, just do not know were to start. Also maybe there is already some existing way to do that?

Any help appreciated.

[eclectus]

check out amatulic's class here
https://vborg.vbsupport.ru/showthread.php?t=82836&highlight=datamanager&page=5

[ArbuZz]

Looks awesome. Thank you for the tip.