vBulletin Mods

I want to use a 'picture' as background on my forum (on every pages)
(Like the lilac on this forum, I want a blue with stars...)

But where can I change this/do this?

But if it's too difficult I don't think I have the nerve :D

The link is not clickable, or are you talking about something on vbulletin.org?

It's not a link. It's the color of this board :)

Anyway, it must be possible to change the background?

The correct and easiest way to change the colors is via vbulletin's stylevars, I will toss you some reference links to get you started.

You should really update your board to a later version before you do this. The stylevar system was greatly improved in later versions.

Basic:
http://www.vbulletin.com/docs/html?m...rsion=40201500
http://www.vbulletin.org/forum/showthread.php?t=256370
http://www.vbulletin.com/vbcms/conte...-10-Easy-Steps

More Advanced:
http://www.vbulletin.org/forum/showthread.php?t=230309

More Advanced - Videos:
http://www.youtube.com/watch?v=sfwle1enLms