Well, here is what I had to do. I created a gridPanel with a width of 100% of my screen and 1 column. Then I added another gridPanel inside that one so it would be a new table in the TD. On the first gridPanel I had to apply a rowClasses property with a style that aligns it's TD in the center.
Long story short:
And the center-td style simply has text-align: center;. [ September 01, 2004: Message edited by: Gregg Bolinger ]
From the reading I have been doing it would appear that there isn't a standard way to center a table using CSS. So now my question would be why doesn't the HtmlPanelGrid component have an "align" property?