The .htaccess file lets you expand the systems list of know document types. I've changed the HTTPD to support the .cgi extension, so it may not be necessary to have that line in your .htaccess file, but it won't hurt anything to have it in there.
The AddType entries allow you to add new types to the mime.types configuration of this server.
.htaccess:
Options ALL AddType text/x-imagemap .map AddType application/x-httpd-cgi .cgi