Patrick Mineault has released an extension for Flash 8 that automagically goes through the hierarchy of movieclips and places their center on a whole pixel.

This helps to eliminate blurry text when your font field and the movieclips that contain it in the hierarchy are set to non-integer _x and _y values.
Download the extension here:

http://www.5etdemi.com/blog/archives/2006/10/flash-command-unblur-aliased-text/