During my first attempts, the jQueryWTP patch installer wouldn't run on Mac OS X 10.4.11 at work. The patch wouldn't run on Leopard at home either. Neither the jQueryWTP project nor its SourceForge download page provide Java or WTP version requirements. All screenshots I've seen show installation on Windows. After a lot of flailing, I was eventually able to get the patch installed. Here is an archive of my trials and tribulations.