You may need to create a batch file that points to your specific version of java. I have a couple of different versions on my computer (for testing scenarios) and I know that if I use the java command line options, it always defaults to the older versions.
So I created a batch file that points to my specific version to launch...
ie..
C:PROGRA~1Javajre1.5.0_06binjava -jar pandora.jar 8085