CSS Need help @ Background!!

Hello,

I while ago i have downloaded a template (css)
Now i want to change the background of it. I want this background:
http://img148.imageshack.us/img148/7359/websitebg.jpg
a friend of my made it.
In the center there is a black squar. the idea is that there the website content must be, and the red stuff around it.
But how to? do you have to know the size of the background (cuz the original is a black little squar that just copy's himself.)


THANKS!!!

Greetz!

 

hi buddy can u share the link for the html?

well if u want u can do something like this

and u also need to crop some part from top.

hope it help

cheers

 

you mean share the link of the website?
Reckoning by Free CSS Templates

Thanks for reply! ill try it out

 

It worked! Changed css into this:

Thanks!!