You can install through xterm by doing this:

You first need extras-devel enabled and you need to be root. Make sure you have rootsh installed. Remember to disable extras-devel when finnished and it's at yor own risk to install from extras-devel repo

Open xterm and type:

sudo gainroot 'enter'

apt-get install wiicontrol 'enter'

then it installs the wiicontrol, wait for /home/user # to appear, then it's finnished

I have just installed it that way, but as mthmob says it disconnect itself, so not really usefull at the moment and further more you have to mod the wiicontrol.conf file after install to make it work. F2thak points to a thread where he guides how to do it some posts back