How To Have Pictue In Category Description?

[RrCoX22]

I want to be able to have a picture on the right side of the column with text of the left side of the column. This is my current code but it places the picture below the text with the text across the entire column...

<span style="float:left">Official Norcal GM Racing store offering apparel such as T-Shirts, Sweatshirts, and many more to come!</span>
<span style="float:right"><a href="http://www.norcalgmracing.spreadshirt.com" target="_blank">
<img src="http://www.norcalgmracing.com/forums/images/storebutton.PNG"
 width="100" height="45" 
 style="border: 0px;" 
 alt="Norcal GM Racing Store" /></span>

here couple of sites that I would like to set it up like if you scroll down near the bottom of the homepage and see that the picture is on the far right of the column...

http://www.chargerforums.com/forums/index.php

http://www.g8board.com/forums/index.php

How do I get it like this?