Fix page background

hello,
did anyone know how to fix background using CSS coding? i've got headache already and still can make this work.

i would like to see forum background fixed and move along with forum banner or forum table when you scroll it up or down. I'm sure this can be done, it just I'm out of idea how to do it

edit : Forget to tell that im using PunBB at the moment.

thanks,
adiex

ok, I know nothing of punBB except that its not so good, but if you know where your css style sheet is paste the frist code in it and it should make the backround scroll with the forum, if you don't like that you can try the second and that will make the backround stay put while the forum scrolls.

Code:

{background-attachment: scroll;}

Code:

{background-attachment: fixed;}

gosh, i've try everything before but none its working

Code:

background-repeat: repeat-x ;
background-attachment: fixed;
background-position: absolute;
background-position:top center;

i never thought that code you give there is solution for my problem here.

{background-attachment: scroll;}

its working perfectly now. thanks man, you just save my day

it's solved
adiex