ISAPI and CGI Restrictions

Hi everyone,

I have a question about ISAPI and CGI Restrictions of IIS 7.5:

The program I'm supporting needs to to utilize dll files, and on the main virtual directory, i see them added as script maps (in handler mappings), and the app works w/o any issues.

I also see them in the ISAPI and CGI Restrictions section of IIS root.

I'm wondering if they need to exist in both places, or if ISAPI and CGI Restrictions are unnecessary.

thanks.