How to prevent authentication for a CGI script in IIS 4.0

I am invoking a CGI script from a web page, but the first time I do it,

it always askes me for username and password. The server is using IIS

4.0. Because the web page will be accessed by Internet community. It will be strange to prompt for username and password. Is there a setting in IIS 4.0 to disable the prompting of username and password? Or in other words, no authentication necessary!


Thanks