how do i put up a background image on column 1 (menu), and then a different background image in column 2 (content)?it's a css layout.

To each the menuu and content sections add
background-image: url(bgimage.jpg);

i have another question now, do i replace url with the url for the image or leave it there?

when i left the 'url' part in it didn't work

It should have, you need to replace the bgimage.jpg part with your image URL and leave the 'url' in place.