Как изменить поставщика услуг DNS Java

Я создаю быстрый поисковый робот, и мне нужно иметь многопоточное разрешение DNS, поэтому я выбрал поставщика услуг многопоточного DNS под названием dnsjava . К сожалению, могу functionality:

Beginning with Java 1.4, service providers can be loaded at runtime. To load the dnsjava service provider, build it as explained above and set the system property:

sun.net.spi.nameservice.provider.1=dns,dnsjava

This instructs the JVM to use the dnsjava service provide for DNS at the highest priority.

There are a couple of things that I'm unclear on:

1. Where do I place the dnsjava.jar?
2. Where is the system property supposed to be set (is it programmatic or some type of file change)?

I'm running on a Windows 7 machine and I'm not sure what I need to do to find/modify the system properties... help!?

Update:
Got it: System.setProperty("sun.net.spi.nameservice.provider.1","dns,dnsjava");