Hi, I have a website where you can register, login, etc...All the info is in a mysql database. I would like it once your logged in my site to click forum...and it login you in automatically. No reregistering...Can anyone help me? The website is built from scratch...Thanks.
I would suggest you post for a paid job Here, with out all the coding of your separate php program, i don't think anyone is going to be able to bridge them together for you.
I did that with my script, it's kind of involved if you have two seperate user tables. You can download it and dig through the php files. I'll answer whatever questions I can.
The easiest way (thinking ahead) would be to use only one user database - either yours or vBulletin's. I wouldn't recommend changing vBulletin's structure - it will break a lot of things.