http://camink.com/UT3/index.html
http://udn.epicgames.com/Three/UT3CustomCharacters.html
http://utforums.epicgames.com/showthread.php?t=658672&highlight=export
http://www.ut40k.planetunreal.gamespy.com/
UT3 ActorX (XSI plugin near bottom) download page:
http://udn.epicgames.com/Two/ActorX.html
UT3 XSI ActorX Plugin Instructions:
http://udn.epicgames.com/Two/ActorXXSITutorial.html