HTML Help

Can someone help me with html? i am trying to get these images ( http://goldengamingtv.activebb.net ) to go something like this: http://techburrow.com I am trying to get it so when the cursor hovers over the images on the portal, it expands and shows a description. Like at TechBurrow. Can someone help me with this, by giving me a code that would allow me to do this?

This is the code i am currently using:

Code:

<div align="center" style="text-align:center"><div align="center" style="text-align:center"><a href="http://goldengaming.gamerzfun.com/youtube-f14/goldengamingtv-s-affiliates-t17.htm" title="Affiliates"><img src="http://i63.servimg.com/u/f63/15/73/03/83/affili10.png"></a> <a href="http://ggtvportfolio.carbonmade.com" title="Now Sponsoring!"><img src="http://i63.servimg.com/u/f63/15/73/03/83/graphi10.png"></a>
<a href="http://goldengaming.gamerzfun.com/news-f1/now-sponsoring-t109.htm#183" target="_blank"><img title="Graphics" src="http://i63.servimg.com/u/f63/15/73/03/83/now_sp10.png"/></a></div><div align="center" style="text-align:center"> </div>

Any suggestions?