Generate Jax-WS Artifacts

I could use some help with figuring out how to generate Jax-ws artifacts with SoapUI.

I have done the following:

- Downloaded Jax-WS, extracted it and set the "JAX-WS WSImport" directory in the SoapUI preferences
- Downloaded and installed a Java JDK and set the JAVA_HOME environment variable

I am all set up to be able to launch Jax-WS wsimport to generate artifacts within soapUI.  Now I just need a little guidance as how to fill in the command parameters.

Let's use this publicly available WSDL as a sample:

http://www.webservicex.net/uszip.asmx?wsdl

After importing the WSDL, and selecting "Tools - JAX-WS Artifacts" what do I need to fill in (at minimum) in the Jax-WS Parameters to generate artifacts?

Thanks for your help!