Here is my runlime.sh
It works from anywhere
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#!/bin/sh
#
# Runs LimeWire. This script must be executed in your LimeWire
# install directory.
#
# We must set the J2SE_PREEMPTCLOSE environment variable to 1 to
# work around some limitations in the JDK1.3. For more information
# see http://java.sun.com/j2se/1.3/relnotes.html#vm
#
J2SE_PREEMPTCLOSE=1; export J2SE_PREEMPTCLOSE

#replace with your LimeWire directory
limewire_dir=/home/roman/LimeWire

cd $limewire_dir

#this is all one line
/usr/java/jdk1.3.1/jre/bin/java -classpath $limewire_dir:$limewire_dir/RunLime.jar:$limewire_dir/LimeWire.jar:$limewire_dir/collections.jar:$limewire_dir/jl011.jar:$limewire_dir/lax.jar:$limewire_dir/xerces.jar com.limegroup.gnutella.gui.Main