Hello,
You will need the NTA (Netflow Traffic Analyzer) module to to use this feature with NPM. And yes, it does support V9 and Flexible Netflow. Make sure your Cisco hardware does have the necessary IOS and expansion modules required for Flexible Netflow.
If you don't have NTA, I would recommend you download and try it free for 30 days. I am sure you will find the NTA features very useful and easy to use.
Zak Kahl
Loop1 Systems