Dynamically center text in movieclip button?

I’m finishing up a project that has a grid of 60 buttons – two different button movieclips on which I’ve done some scripting for links, alpha tweens, etc. Each instance of the movieclip button is uniquely named.

In side each of the two different style of movieclip buttons is a dynamic text field that, unfortunately, is sized to the dimensions of the movieclip background. Thus, when dynamic text is pulled in (from XML-based arrays) to populate the movieclip buttons, it is top aligned if only 1 line long.

Given this current setup, how can I dynamically center (vertically and horiztonally) the dynamic text field within each of the two movieclip buttons?

Any help is greatly appreciated.

IronChefMorimoto