[phpod]

I am writing a script that will use my members database to validate a login to a restricted part of my website... Basically what I'm trying to do is check that the username/password that was supplied to the form is actually a username/password of a member of my board... I know that the passwords in my user database are encrypted by vBulletin however i don't know how, it looks like MD5 but i get don't get the same MD5 sum when i use the PHP MD5() Function on the same password i used as my admin password. Does anyone know how VB Encrypts the passwords of users so i can decrypt them to use them???