if LimeWire doesn't launch Java bcause it can't find it but you know u installed it, check this:
if you installed it thru RPM it should be in the /usr/java/[JAVA VERSION]/bin folder.
Add it into LimeWire.bin using Kate or vi.
Code:
#!/bin/sh
PATH=$PATH:/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/java/jre1.5.0/bin
If you installed it just usin the bin file, you might need to do some searching.
but just follow the same instructions.
xboxrulz