no luck either.. but its ok because we are going to use a different setup rather than ning. We already have a phpizabi installation setup and i have direct contact with its original creator, who happened to code a voting script... good luck with your search..
It's at Scripts4ning.ning.com. Just click on the purchase tab, the fill in the Paypal info. They'll send you an e-mail within 24 hours with a link that allows you join the "Subscribers" group, and install the scripts.