QUOTE (cranfordguitar @ Sep 23 2009, 03:22 PM)

Can I set the total width of my site to be oh say 800 and have it centered? And is there a way to have it set that way aoutomatically so everything on the page fits?
you should have an div element on your page with an id of wrapper. you'll need custom css enabled if you havent done so already (first by telling your theme to not use the default style sheet. you can do this in design/colors... and check the appropriate box). then you would need to atleast set the css as follows.
body{
width: 100%;
}
#wrapper {
width:800px;
margin: 0 auto;
}
lemme break it down for you:
in css # is equal to "id" (and likewise . is equal to "class"). #wrapper means "any element with an id of wrapper". width is obviously setting the width. margin is a little tougher to grasp.
for starters margin can take four inputs or less in a clockwise order starting at the top, but it doesnt always have to. if it has 2 inputs it assumes that the first is top and bottom and the second is left and right. by setting it as :0 auto; you are saying give me no margin on the top and bottom, and give me an equal margin on the left and right, thus giving you a center aligned element.
i know its kind egghead stuff, and i hope that explains it.