I would recommend against Kazaa unless you want to tinker with a squirrelly machine after it is installed. See here for a little info on Kazaa or do a search for more info.
http://help.isu.edu/disppage.php?doc_id=335&sec_id=41
I have had to deal with a number of machines that were flaky due to Kazaa installations. There is a Kazaa Lite out there now that might work better. I will tell you that Kazaa will NEVER get installed on any machine that I own!