security for ArcGIS Viewer for Flex folder in iis7

[PeterHoffman]

I am trying to limit who can run my application by folder access on a windows 2008 server with iis7. I have approx. 30 users that I will create an AD group for. So far I have not found a way to do this in the IIS admin settings. Has anyone set this up?
Thanks

[AnthonyGiles]

Peter,

I thought that one of the enhancements in the 3.0 version of the viewer was a log in screen for secure services. If you make one of your base maps secure you should be prompted to login to use the viewer.

The user accounts on your arcgis server can be set from your active directory,

Regards

Anthony

[PeterHoffman]

I have tried setting security on my basemaps and it caused other problems due to custom widgets.
If windows authentication is enabled in iis7 I am prompted for domain/username and password whcih does work. However I want to add users to an AD group and not be prompted when they use the application.