Can you please help me fix my banner that I tried to insert into my CSS as instructed be your tutorial, I can't get it to come in. Ive put the banner url in and also the correct code into the header, but it stil doesn't work HELP My site add is KWofphotography. I would also like to center both the banner and the slideshow. My banner is vertical

OK, there are several things going on here.

First, your image is 600px high and 200px wide. That's not going to fit in the standard banner position. That would normally be 600px wide and 200px wide.

Second, your CSS is not quite right. For the image you have, it should be this (it's not length and width, it's height and width):

#my_banner{
height: 600px;
width: 200px;
margin: 0 auto;
background: url(http://img104.imageshack.us/img104/1359/26119725331232670696gh5.png)
no-repeat;
}

Third, you can do this however you want, but usually people put the banner above the navbar. If you want it that way, then you just put the <div id="my_banner"></div> above the navbar HTML.