Template Help

I just posted this under the actual theme help before I thought a little more about it and i am going to include the CSS code that I am working with that is not working too well:

I am using this theme just because I am new and it was easy to use and readily compatible with all my plugins. I have a custom background (one full jpg with side bar and one without) and I just want to use these two images as my backgrounds for the appropriate layout (side bar or none). I do not need to use any of the other headers or background images.

How would I do this??

the images are at:

http://www.trickdrums.com/TWP/wp-content/themes/elegant-grunge/images/NewGrunge.jpg

http://www.trickdrums.com/TWP/wp-content/themes/elegant-grunge/images/NewGrungeSidebar.jpg

As for the rest of the CSS it is fine to remain the same so I can get in other header files at a later date and add in page backgrounds and such.

The stock CSS is not edited at this point.

Any help would be GREATLY appreciated for you CSS gurus!

CSS:

[moderated]
Please paste your CSS into a pastebin, such as wordpress.pastebin.ca, and report the link back here. Thanks.