well, the zip should contain a README file with simple steps how to build the portlet and then just drop the .war file into your server/default/deploy directory and it will be deployed.
Thanks it works. Two things that were throwing me off were :
1. There is a HelloPortlet.zip sample that doesn't seem to work. The HelloWorldPortlet.zip does work.
2. The HelloWorld Portlet appears at the bottom of the page, I didn't see it and though that it wasn't showing any results.
Thanks, I'm all set for now.