MyBB Community Forums

Can i somehow integrate mybb with my website? So the theme'll be the same as the site?
Is it possible with mybb? If it is, is there a tutorial somwhere?

You can "wrap" your website's header and footer around the forum. Take a look at the header and footer templates.

yea i know that i'v done it - but is there no way to integrate it?

Please be more specific in what you mean by "integrate"

When someone registers at his site he is registered at site and stuff like that
But what kind of website do you have?