Vbulletin Questions


I am new to vbulletin, and i am just wondering, how do i integrate my site style round vbuletin?

I have purchased and installed version 3.7, and i cant seem to integrate my site style.

On the vbulletin admin panel, i go to styles, and then put in my php for including my site style in the header, and for some reason it doesnt work?