I got my installers from the Limewire site. I've got a P4 2.67 GHz, 768 MB RAM, 170 GB total HD space, WinXP SP2, I've got Sygate Personal Firewall (which I got after LW stopped working) and PeerGuardian2, and according to "java -version" I have:

java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2-b28)
Java HotSpot(TM) Client VM (build 1.4.2-b28, mixed mode).

HTH