Can't read images after upload, stumped.

Almost successfully have ckfinder working with ckeditor in drupal. My directory is www.mysite/images directory where other images are stored. permissions on the directory are ok and anonymous internet users can access the site correctly. When I upload an image with ckfinder the owner of the image is IUSR with read permissions, but the user IIS_IUSRS does not have read permission. All other images in the directory for the website work fine, just not the images uploaded with ckfinder.

The permission given to the uploaded file for IIS_IUSRS is "special permissions" and it doesn't include read access. If I manually change the permission on the specific image to have read access, then it works ok.

When an image is uploaded, it shows up fine in ckfinder server window and the correct path, etc. is passed to ckeditor, but the image cannot be displayed in preview or the website because the permissions on that file is not set to read (for IIS_IUSRS).

How can I set ckfinder to upload images so IIS_IUSRS users have permission to read them?

I've been trying for hours and am stumped. Thanks for any help.