How to make the content box of my website auto repeat?

ok,

so im learning how to design websites, i currently outsource most of my work but i am interested in learning how to do it myself.

i have searched random dreamweaver tuts and i just cant find the answer to my question (partly because i dont really know how to word the question)

so heres the deal

im building a site using css and html.

i have the
<wrapper>
<header image>
<content image>
<p> i want all of my content here
i want all of my content here
i want all of my content here
i want all of my content here
i want all of my content here
i want all of my content here
i want all of my content here
i want all of my content here
</p>
<footer image>
<div>
<div>
<div>
<div>

of course thats not accurate but you get the idea of what im doing.

now my problem is when i add text to the content image <DIV> the text just goes to the next line but the content background image does not down with it.

when i outsource it they do something so that my content image slice repeats as i add more content.

thanx

P.s this stuff is actually pretty fun, the more books i read on css the more practical web design becomes.. i love it!