Does reading Hyper-V VM's KVP should be started?

Hi

I've number of VM in Hyper V (2008 R2). I want to know whether all the VMs has the Integration Services installed or not. I'm using KVPs (Key-Value Pair Data Item) WMI API, but I able to query the KVPs only when the VM started. Reading only one KVP, should I start VM one by one??!!.. (I know KVPs written in Guest Registry...)

Can I read the KVP without starting the VM?

-Ganesh