I'm working on a site for my in-laws:

shiversbbq.com

I made the header and sidebar using slices with photoshop but I want to continue the wood border into the right and bottom of the main content. What is the best way to do this?

Thanks!

I think this is what you are looking for:
<td background="YourImage" width="xx" height="xx">

Are they small images stretched or one large image. If they're one image I suggest selecting the horizontal selection tool in a certain area and stretching the image.

For the bottom border just use one of the images from the header and use it for the footer.