Skinning issue with vB, background image repeating

[CnB]

I am unsure if its possible at all but maybe i am wrong.

The background image from a vB style repeats its self.
for example

-------- content ---------

left side is just the backrgound image , the middle is where all your sections are and the right side is the background image again.

i am trying to match the background from the forum and the site i am working on.

but when i tried editing the background image.
i came to the conclusion vB uses a repeat image.

like

1234 - content - 1234

there is no way for example to make it do

1234 - content - 4321


anybody got more experience in this ?

i hope i make sense with my weird explaning

here is a pic of what i mean

http://users.edpnet.be/adr3nal1n/example.JPG

makes more sense i think