Hello guys, I am here with a problem. It may sound a little confusing, it goes like this. I have bought a few php scripts to start a website. (e.g, a theme download script, a blog creator script, a forum creator script, a hotscripts clone, an image hosting script etc). They all use different databases. I have installed them at different subdomains of my main domain. I want to know how can i integrate them so that they use a single user database. that is, a user has to register just once to the site, and he can access all the subdomains/scripts as a registered user. I dont even know that it is possible or not. But if it is, how do i go for it? I am not so good in coding, but have some knowledge. Also, I will use either MyBB or vBulletin as a forum, so it needs to be integrated as well. Please let me know if it is possible.