You MUST run this before playing the game:
emerge --config =${CATEGORY}/${PF}
That way you can (re)enter your cdkey.
If you are not installing for the first time and you plan on running
a server, you will probably need to edit your
~/.ut2003/System/UT2003.ini file and add a line that says
AccessControlClass=crashfix.iaccesscontrolini to your
[Engine.GameInfo] section to close a security issue.
This package leaves a cdkey file in ${EROOT}${DIR}/System that you need
to remove to completely get rid of this game's files.
Your CD key is NOT checked for validity here so
make sure you type it in correctly.
If you CTRL+C out of this, the game will not run!