Hi,
If you installed the sun java, it's probably installed somewhere in /usr/java. I don't know about the jre, perhaps it's in /usr/java/jre1.4.2_02 or something like that. Look around and find the bin directory that contains the java executable.
I don't think that linux can launch jar files by double clicking them, I might be wrong. What I'd do is put the jbidwatcher jar somewhere like /u.
2003-12-04 14:32:42 UTC in JBidwatcher