[Help requested] Footer and sides

[k3rm1]

Hi I am trying to make my own theme and i have a hard time with the sides and the footer.
Its just CSS atm but I want to replace the black lines at the sides with a image and the footer.

This is how it looks now.
https://vborg.vbsupport.ru/external/2012/03/39.png

This is how i want it to look
https://vborg.vbsupport.ru/external/2012/03/40.png