Yeah it annoyed me too when it got taken down a few months back. My reccommendation would be to download another free one (Gnutella etc.) and use it to download Kazaa Lite... once you have Kazaa Lite up and running, you can uninstall Gnutella (or whichever you used).
And do what I did - when you have Kazaa Lite, put it on disk straight away so you have it forever!
I used to host www.j2buttonsw.ath.cx but it stopped working and I don't know how to fix it. Anybody know anything about IIS? Strangely, the ftp server still works.