To get the bios working, open XPlayers.int (in the UT2003System directory) with a simple text editor. Copy the following 2 lines (also enclosed in pwrarm_readme.txt) at the bottom of the XPlayers.int file:
================================================================ Model Name : project:16-3 installation directory : ut2003animationsukx file here ut2003 extures utx file here ut2003system upl file her