I put my path statement into my .bash_profile and still it crashes for me. I downloaded blackdown j2sdk1.3.1;
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I issue the command:

su -c "./LimeWireLinux.bin"
Password:
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Program spits:

Preparing to install...
Extracting the installation resources from the installer archive...
Configuring the installer for this system's environment...

Launching installer...

Error: Unrecognized JVM specific option `-Xmx50331648'.
Error: Unrecognized JVM specific option `-Xms16777216'.
Invocation of this Java Application has caused an InvocationTargetException. This application will now exit. (LAX)

Stack Trace:
java.lang.NoClassDefFoundError: ZeroGcf
at ZeroGcj.<init>(source file unknown:line unknown, pc 0x86d3d74)
at ZeroGb3.a(source file unknown:line unknown, pc 0x86cd54b)
at com.zerog.ia.installer.Main.a(source file unknown:line unknown, pc 0x8662531)
at com.zerog.ia.installer.Main.b(source file unknown:line unknown, pc 0x86471c1)
at com.zerog.ia.installer.Main.main(source file unknown:line unknown, pc 0x8577a61)
at java.lang.reflect.Method.invoke(Method.java:native )
at com.zerog.lax.LAX.launch(source file unknown:line unknown, pc 0x82a89d6)
at com.zerog.lax.LAX.main(source file unknown:line unknown, pc 0x825cbcb)

I tried installing with my path pointing to /usr/java/jre/bin and /usr/java/bin without any success.