I created a step-by-step tutorial for those that are interested using a cheap Comodo reseller to generate signed plugins and beans. Comodo was one of the cheapest ones that I found, that was installed in the JRE by default. Details at: http://www.servoyguy.com/knowledge_base ... _and_beans
Note, for those that are unaware, Servoy also has a page on their wiki at http://wiki.servoy.com/display/tutorials/JAR+signing