is it possible to create a group which selects only windows hosts with no data
For others playing along at home (or work, as the case may be)...
The below SQL is for a query that will show Windows devices that have been discovered successfully, but NOT had an audit script run.
Menu -> Manage -> Queries -> Create Queries.
I believe it is possible but will have to look into this more. In the mean time I created a JIRA ticket for you to be able to track this issue a bit easier. You will receive an email about this topic from JIRA momentarily.