found a quick and easy way to install all the bits and bobs it requires:
apt-get install libterm-readkey-perl libnet-scp-expect-perl libfile-policy-perl libnumber-range-perl libalgorithm-permute-perl libparallel-forkmanager-perl
Latest Version of Wepbuster:
http://wepbuster.googlecode.com/files/wepbuster-1.0_beta-0.7.tgz