[MaestroX]

border-left: url(http://etcetcetcetcetcetc.com)
border-right: url(http://etcetcetcetcetcetc.com)

Possibly?

That won't work I'm afraid.

A solution would be to add <div class="background-left"><div class="background-right"> to the header (right at the top) template. Add the close div's right at the bottom of the footer template (</div></div>) and then add this to your css:

.background-left {
background: url(path/to/left/background/image.gif) left;
}
.background-right {
background: url(path/to/right/background/image.gif) right;
}

Obviously the code will need to be tweaked to suit your needs but it should work.

Hope this helps