The follwing _might_ work (I could not test it since I have no NetZero account, please post your success):

Code:
wget  http://software.lindows.com/emptypoo...o_1.0.3.tar.gz
unp lind*
java -jar lindowsos-dialer-netzero/jvlclient.jar
or
Code:
cp ./lindowsos-dialer-netzero/knzppp-lindows $HOME/.kde/share/config/kppprc
kppp -q -c NetZero